Median household income (1999): $10,745
Estimated median household income in 2005: $11,207
| This zip code | $11,207 | | Iowa: | $43,609 |
Nearest zip codes: 51105, 51104, 68776, 51103, 51106, 51108.
Housing units in zip code 51101 with a mortgage: 7 (0 second mortgage, 0 home equity loan, 0 both second mortgage and home equity loan)
Houses without a mortgage: 0
Median monthly owner costs for units with a mortgage: $450
Median monthly owner costs for units without a mortgage: $0
Residents with income below the poverty level in 1999:
| This zip code: | 39.9% | | Whole state: | 9.1% |
Residents with income below 50% of the poverty level in 1999:
| This zip code: | 12.9% | | Whole state: | 3.8% |
Median number of rooms in houses and condos:
| Here: | 4.0 | | State: | 6.3 |
Median number of rooms in apartments:
| Here: | 3.0 | | State: | 4.2 |
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Click to draw/clear zip code borders
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Notable locations in this zip code not listed on our city pages:
Notable locations in zip code 51101: Orpheum Theater (A), Woodbury County Law Library (B), Woodbury County Courthouse (C), Sioux City Public Library (D), Sioux City Library (E), Sioux City Fire Department (F), Sioux City Convention Center (G), Sioux City City Hall (H), Sioux City Auditorium (I), Sioux City Art Center (J). Display/hide their locations on the map
Churches in zip code 51101 include: First Evangelical Free Church (A), First Presbyterian Church (B), Augustana Lutheran Church (C). Display/hide their locations on the map
Post office: Sioux City Post Office (A). Display/hide its location on the map
Tourist attraction (not listed on the city page) : Allied Tours (Tours & Charters; 921 Dace Avenue).
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Year house built: |
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- 1999 to March 2000: 0
- 1995 to 1998: 19
- 1990 to 1994: 0
- 1980 to 1989: 31
- 1970 to 1979: 49
- 1960 to 1969: 18
- 1950 to 1959: 55
- 1940 to 1949: 61
- 1939 or earlier: 169
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Bedrooms in owner-occupied houses in Sioux City, IA (51101): |
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- no bedroom: 0
- 1 bedrooms: 7
- 2 bedrooms: 0
- 3 bedrooms: 0
- 4 bedrooms: 0
- 5 or more bedrooms: 0
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Bedrooms in renter-occupied apartments and housing units: |
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- no bedroom: 40
- 1 bedrooms: 224
- 2 bedrooms: 78
- 3 bedrooms: 9
- 4 bedrooms: 0
- 5 or more bedrooms: 0
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Vehicles available in 51101 zip code in owner-occupied houses/condos: |
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- no vehicle: 0
- 1 vehicle: 0
- 2 vehicles: 7
- 3 vehicles: 0
- 4 vehicles: 0
- 5 or more vehicles: 0
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Vehicles available in renter-occupied apartments: |
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- no vehicle: 188
- 1 vehicle: 146
- 2 vehicles: 11
- 3 vehicles: 6
- 4 vehicles: 0
- 5 or more vehicles: 0
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Estimated household income distribution in 2005:

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Estimate of home value of owner-occupied houses/condos in 2005 in zip code 51101:
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Rent paid by renters in 2000 in zip code 51101:
- Less than $100: 6
- $100 to $149: 47
- $150 to $199: 63
- $200 to $249: 53
- $250 to $299: 47
- $300 to $349: 48
- $350 to $399: 32
- $400 to $449: 40
- $500 to $549: 4
- $550 to $599: 6
- $750 to $799: 5
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Estimated median house (or condo) value in 2005 for: - White Non-Hispanic householders: $38,190
Housing units in structures:
- One, detached: 23
- One, attached: 4
- Two: 29
- 3 or 4: 31
- 5 to 9: 44
- 10 to 19: 28
- 20 to 49: 93
- 50 or more: 150

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Means of transportation to work
- Drove a car alone: 69 (49%)
- Carpooled: 24 (17%)
- Bus or trolley bus: 12 (9%)
- Taxi: 8 (6%)
- Walked: 27 (19%)
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Travel time to work
- Less than 5 minutes: 0
- 5 to 9 minutes: 29
- 10 to 14 minutes: 23
- 15 to 19 minutes: 44
- 20 to 24 minutes: 18
- 25 to 29 minutes: 14
- 30 to 34 minutes: 0
- 35 to 39 minutes: 0
- 40 to 44 minutes: 0
- 45 to 59 minutes: 7
- 60 to 89 minutes: 5
- 90 or more minutes: 0
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Percentage of zip code residents living and working in this county: 80.7%
Household type by relationship
Households: 514
- In family households: 222 (43 male householders, 33 female householders)
47 spouses, 77 children (62 natural, 0 adopted, 15 stepchildren), 0 grandchildren, 0 brothers or sisters, 0 parents, 10 other relatives, 12 non-relatives
- In nonfamily households: 292 (120 male householders (109 living alone)), 159 female householders (159 living alone)), 13 nonrelatives
- In group quarters: 33 (13 institutionalized population)
Size of family households: 59 2-persons, 8 3-persons, 5 5-persons, 4 6-persons.
Size of nonfamily households: 268 1-person, 11 2-persons.
35 married couples with children.
55 single-parent households (12 men, 43 women).
95.3% of residents of 51101 zip code speak English at home.
3.1% of residents speak other Indo-European language at home (100% very well).
1.6% of residents speak Asian or Pacific Island language at home (100% not well).
Foreign born population: 18 (2.1%)
(0.0% of them are naturalized citizens)
| This zip code: | 2.1% | | Whole state: | 3.1% |
Most common places of birth for the foreign-born residents:
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- Guatemala (56%)
- China, excluding Hong Kong and Taiwan (44%)
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Year of entry for the foreign-born population |
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- 1995 to March 2000: 11
- 1990 to 1994: 7
- 1985 to 1989: 0
- 1980 to 1984: 0
- 1975 to 1979: 0
- 1970 to 1974: 0
- 1970 to 1974: 0
- 1965 to 1969: 0
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First ancestries reported:
- Other groups: 135
- English: 48
- German: 37
- Irish: 36
- United States or American: 33
- Norwegian: 24
- Swedish: 19
- Italian: 16
- French Canadian: 12
- Dutch: 8
- European: 7
- French (except Basque): 6
- Danish: 5
- Welsh: 5

Major facitilies with environmental interests located in this zip code:
- NUTRA FLO COMPANY (514 SOUTH FLOYD BOULEVARD in SIOUX CITY, IA)
AIR MINOR (AIRS/AFS)
ENFORCEMENT/COMPLIANCE ACTIVITY (Integrated Compliance Information System) - ICIS-07-2000-0640, FORMAL ENFORCEMENT ACTION, ICIS-07-2000-0641,
(Integrated Compliance Information System) - ICIS-07-2000-0640, FORMAL ENFORCEMENT ACTION, ICIS-07-2000-0641,
(Integrated Compliance Information System) - ICIS-07-2000-0128, FORMAL ENFORCEMENT ACTION
CRITERIA AND HAZARDOUS AIR POLLUTANT INVENTORY (Inventory of air pollution sources)
National Pollutant Discharge Elimination System NON-MAJOR (Tracking pollutant discharge elimination systems) - permit
Conditionally Exempt Small Quantity Generators, less than 100 kg/month of hazardous waste (Resource Conservation and Recovery Act (tracking hazardous waste))
HAZARDOUS WASTE BIENNIAL REPORTER (Resource Conservation and Recovery Act (tracking hazardous waste))
TRI REPORTER (Tracking of toxic chemicals releasing facilities)
Business SIC classification: PREPARED FEEDS AND FEED INGREDIENTS FOR ANIMALS AND FOWLS, EXCEPT DOGS AND CATS; NITROGENOUS FERTILIZERS; PHOSPHATIC FERTILIZERS; FERTILIZERS, MIXING ONLY
Organizations: NUTRA-FLO COMPANY (CONTACT/OWNER)
Alternative names: NULEX, INC., NUTRA-FLO CO. FLOYD FACILITY, NUTRA-FLO COMPANY FLOYD PLANT
- SIOUXLAND CONCRETE (200 48TH STREET in SIOUX CITY, IA)
(Integrated Compliance Information System) - ICIS-07-2005-0231, ENFORCEMENT/COMPLIANCE ACTIVITY
FORMAL ENFORCEMENT ACTION (Integrated Compliance Information System) - ICIS-07-2005-0231, ENFORCEMENT/COMPLIANCE ACTIVITY
- TERRA INDUSTRIES INCORPORATED (600 4TH STREET in SIOUX CITY, IA)
(Integrated Compliance Information System) - ICIS-07-1990-0079, FORMAL ENFORCEMENT ACTION, ICIS-07-1990-0080, ICIS-07-1996-0221, ICIS-07-2005-0406, ENFORCEMENT/COMPLIANCE ACTIVITY
COMPLIANCE ACTIVITY (Tracking inspections of insecticide, fungicide, and rodenticide, and toxic substances)
(Resource Conservation and Recovery Act (tracking hazardous waste))
Business NAICS classification: NITROGENOUS FERTILIZER MANUFACTURING.
Alternative names: TERRA CHEMICALS INTERNATIONAL, TERRA CHEMICALS INTERNATIONAL, INC. SGT., TERRA INTERNATIONAL, INC.
- SIOUX CITY WINAIR (509 IOWA ST in SIOUX CITY, IA)
(Resource Conservation and Recovery Act (tracking hazardous waste)) - ICIS-, ENFORCEMENT/COMPLIANCE ACTIVITY
Organizations: THORP ELECTRIC LTD (CONTACT/OWNER)
Alternative names: H & B ELECTRIC
- STATE STEEL SUPPLY COMPANY (214 COURT ST in SIOUX CITY, IA)
AIR MINOR (AIRS/AFS)
COMPLIANCE ACTIVITY (Tracking inspections of insecticide, fungicide, and rodenticide, and toxic substances)
Business SIC classification: METALS SERVICE CENTERS AND OFFICES; SCRAP AND WASTE MATERIALS
Alternative names: COMPRESSED STEEL CO, SIOUX CITY COMPRESSED STEEL COMPANY
- AGRO DISTRIBUTION L.L.C. D/B/A PRO SOURCE ONE (600 4TH STREET in SIOUX CITY, IA)
(Integrated Compliance Information System) - ICIS-05-2005-0076, FORMAL ENFORCEMENT ACTION, ENFORCEMENT/COMPLIANCE ACTIVITY
- SIOUX CITY FORD (2001 E 6TH ST in SIOUX CITY, IA)
Small Quantity Generators, between 100 kg and 1000 kg of hazardous waste/month (Resource Conservation and Recovery Act (tracking hazardous waste)) - ICIS-, ENFORCEMENT/COMPLIANCE ACTIVITY
Business NAICS classification: GENERAL AUTOMOTIVE REPAIR.; AUTOMOTIVE BODY, PAINT, AND INTERIOR REPAIR AND MAINTENANCE.
Alternative names: TEAM FORD INC
- CARGILL INCORPORATED (980 CLARK STREET in SIOUX CITY, IA)
ENFORCEMENT/COMPLIANCE ACTIVITY (Integrated Compliance Information System)
COMPLIANCE ACTIVITY (Tracking inspections of insecticide, fungicide, and rodenticide, and toxic substances)
CRITERIA AND HAZARDOUS AIR POLLUTANT INVENTORY (Inventory of air pollution sources)
AIR MAJOR ("Best Available" air pollution technologies tracking)
TRI REPORTER (Tracking of toxic chemicals releasing facilities)
Business SIC classification: SOYBEAN OIL MILLS
Alternative names: CARGILL INC - SIOUX CITY, CARGILL INC - SIOUX CITY, CARGILL INC. - SIOUX CITY
- USPS - SIOUX CITY MPO/VMF (214 JACKSON ST in SIOUX CITY, IA). Federal Facility
(Resource Conservation and Recovery Act (tracking hazardous waste))
Organizations: U S POSTAL SERVICE - HAWKEYE DISTRICT (CONTACT/OWNER)
Alternative names: U S POSTAL SERVICE - SIOUX CITY
- SIOUX HONEY ASSOCIATION (301 LEWIS BOULEVARD in SIOUX CITY, IA)
AIR MINOR (AIRS/AFS)
COMPLIANCE ACTIVITY (Tracking inspections of insecticide, fungicide, and rodenticide, and toxic substances)
Conditionally Exempt Small Quantity Generators, less than 100 kg/month of hazardous waste (Resource Conservation and Recovery Act (tracking hazardous waste))
Business SIC classification: FOOD PREPARATIONS
Alternative names: SIOUX HONEY ASSN
- BOMGAARS SUPPLY, INC. (4TH. & WATER STREET in SIOUX CITY, IA)
COMPLIANCE ACTIVITY (Tracking inspections of insecticide, fungicide, and rodenticide, and toxic substances)
National Pollutant Discharge Elimination System NON-MAJOR (Tracking pollutant discharge elimination systems) - permit
Business SIC classification: MISCELLANEOUS GENERAL MERCHANDISE STORES
- BOB'S CLOSEOUT (909 GORDON DR in SIOUX CITY, IA)
(Resource Conservation and Recovery Act (tracking hazardous waste))
- BENSON BUILDING L.L.C. (705 DOUGLAS STREET in SIOUX CITY, IA)
National Pollutant Discharge Elimination System NON-MAJOR (Tracking pollutant discharge elimination systems) - permit
Business SIC classification: OPERATORS OF NONRESIDENTIAL BUILDINGS
Most commonly used house heating fuel: |
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- Electricity (52%)
- Utility gas (38%)
- No fuel used (7%)
- Other fuel (3%)
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Place of birth for U.S.-born residents:
- This state: 331
- Northeast: 9
- Midwest: 121
- South: 44
- West: 24
31% of the 51101 zip code residents lived in the same house 5 years ago.
Out of people who lived in different houses, 76% lived in this county.
Out of people who lived in different counties, 25% lived in Iowa.
Population in 1990: 765. Population change in the 1990s: +79 (+10.3%).
Year Householders Moved Into Unit:
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Private vs. public school enrollment:
Students in private schools in grades 1 to 8 (elementary and middle school): 0
| Here: | 0.0% | | Iowa: | 10.8% |
Students in private schools in grades 9 to 12 (high school): 0
| Here: | 0.0% | | Iowa: | 7.1% |
Students in private undergraduate colleges: 0
| Here: | 0.0% | | Iowa: | 25.4% |
School Enrollment by Level of School
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Companies with biggest federal contracts located in this zip code (SIOUX CITY, IA):
- WESTERN CONTRACTING CORPORATIO (705 DOUGLAS ST STE 400; small business): $54,971,554 in 122 contracts from 1999 to 2006
Contracts for Construction of Structures and Facilities -- Other Non-Building Facilities, Construction of Structures and Facilities -- Restoration of real property, Construction of Structures and Facilities -- Other Conservation and Development Facilities, Construction of Structures and Facilities -- Highways, Roads, Streets, Bridges, and Railways (includes resurfacing), and more by Army, U.S. Army Corps of Engineers - civil program financing only Signed by year: 2000: $281,962; 2001: $0; 2002: $4,690,678; 2003: $3,367,028; 2004: $24,161,342; 2005: $12,342,842; 2006: $9,927,702.
Biggest contracts:
$6,206,354 with Army for Construction of Structures and Facilities -- Other Non-Building Facilities. Signed on 2006-01-31. Completion date: 2006-10-26.
$2,500,000 with U.S. Army Corps of Engineers - civil program financing only for Construction of Structures and Facilities -- Restoration of real property. Taking place in NE. Signed on 2002-02-11. Completion date: 2004-09-30.
$2,400,687 with U.S. Army Corps of Engineers - civil program financing only for Construction of Structures and Facilities -- Other Non-Building Facilities. Signed on 2005-04-29. Completion date: 2006-05-31.
$2,400,687 with Army for Construction of Structures and Facilities -- Other Non-Building Facilities. Signed on 2005-04-29. Completion date: 2006-05-31.
- L & L BUILDERS CO (2205 E 4TH ST; small business): $20,393,147 in 44 contracts from 2001 to 2006
Contracts for Maintenance, Repair or Alteration of Real Property -- Other Airfield Structures, Construction of Structures and Facilities -- Tank Automotive Facilities, Construction of Structures and Facilities -- Parking Facilities Conservation, Construction of Structures and Facilities -- Other Non-Building Facilities, and more by Army Signed by year: 2000: $0; 2001: $35,428; 2002: $7,726,062; 2003: $11,694,578; 2004: $417,183; 2005: $432,896; 2006: $87,000.
Biggest contracts:
$11,408,300 with Army for Maintenance, Repair or Alteration of Real Property -- Other Airfield Structures. Signed on 2003-06-24. Completion date: 2005-01-05.
$7,612,800 with Army for Construction of Structures and Facilities -- Tank Automotive Facilities. Signed on 2002-06-27. Completion date: 2003-10-01.
$314,555 with Army for Maintenance, Repair or Alteration of Real Property -- Other Airfield Structures. Signed on 2003-08-26. Completion date: 2003-10-16.
$178,823 with Army for Construction of Structures and Facilities -- Parking Facilities Conservation. Signed on 2005-06-09. Completion date: 2005-09-08.
- SIOUX HONEY ASSOCIATION (301 LEWIS BLVD; small business): $5,169,463 in 21 contracts from 1999 to 2005
Contracts for Food Items For Resale by Defense Commissary Agency, Department of Defense Signed by year: 2000: $99,300; 2001: $141,953; 2002: $309,407; 2003: $217,573; 2004: $1,493,599; 2005: $2,870,736; 2006: $0.
Biggest contracts:
$1,253,394 with Defense Commissary Agency for Food Items For Resale. Signed on 2005-04-01. Completion date: 2005-08-31.
$1,244,697, same as above. Signed on 2004-10-01. Completion date: 2005-02-28.
$815,807, same as above. Signed on 2005-10-01. Completion date: 2005-12-31.
$585,639, same as above. Signed on 2005-01-01. Completion date: 2005-03-31.
- SIOUX CITY WINTRONIC CO (1110 DACE AVE; small business): $254,947 in 5 contracts from 2002 to 2005
Contracts for Miscellaneous Communication Equipment, Miscellaneous Items by Army Signed by year: 2000: $0; 2001: $0; 2002: $221,940; 2003: $0; 2004: $23,186; 2005: $9,821; 2006: $0.
Biggest contracts:
$95,200 with Army for Miscellaneous Communication Equipment. Signed on 2002-07-18. Completion date: 2002-08-16.
$92,540, same as above. Signed on 2002-06-28. Completion date: 2002-07-31.
$34,200, same as above. Signed on 2002-07-09. Completion date: 2002-08-09.
$23,186, same as above. Signed on 2004-03-24. Completion date: 2004-04-12.
- ELECTRONICS OF SIOUX CITY INC (415 PAVONIA ST; small business): $206,803 in 8 contracts from 2002 to 2005
Contracts for Video Recording and Reproducing Equipment, Miscellaneous Items by Army Signed by year: 2000: $0; 2001: $0; 2002: $48,887; 2003: $0; 2004: $148,649; 2005: $9,267; 2006: $0.
Biggest contracts:
$48,887 with Army for Video Recording and Reproducing Equipment. Signed on 2002-09-26. Completion date: 2002-12-31.
$40,935, same as above. Signed on 2004-08-31. Completion date: 2004-09-30.
$39,780, same as above. Signed on 2004-09-14. Completion date: 2004-10-15.
$32,375, same as above. Signed on 2004-05-02. Completion date: 2004-06-30.
- NEW SIOUX CITY IRON COMPANY, T (310 S FLOYD BLVD; small business): $152,642 in 2 contracts in 2005
$76,321 with Army for Compressors and Vacuum Pumps. Signed on 2005-08-12. Completion date: 2005-09-30.
$76,321 with U.S. Army Corps of Engineers - civil program financing only for Compressors and Vacuum Pumps. Signed on 2005-08-12. Completion date: 2005-09-30.
- TOBA OF IOWA L L C (900 CLARK STREET; small business): $135,172 in 17 contracts from 2001 to 2005
Contracts for Dairy Foods and Eggs, Fruits and Vegetables by Indian Affairs (Assistant Secretary), Defense Logistics Agency Signed by year: 2000: $0; 2001: $30,000; 2002: $0; 2003: $0; 2004: $38,798; 2005: $66,374; 2006: $0.
Biggest contracts:
$30,000 with Indian Affairs (Assistant Secretary) for Dairy Foods and Eggs. Taking place in SD. Signed on 2001-06-15. Completion date: 2001-12-15.
$8,990 with Defense Logistics Agency for Fruits and Vegetables. Signed on 2005-01-14. Completion date: 2005-01-14.
$8,875, same as above. Signed on 2004-12-08. Completion date: 2004-12-08.
$8,662, same as above. Signed on 2004-11-10. Completion date: 2004-11-10.
- BARKLEY ASPHALT INC (123 STEUBEN ST; small business): $113,838 in 2 contracts in 2005
$56,919 with Army for Construction of Structures and Facilities -- Highways, Roads, Streets, Bridges, and Railways (includes resurfacing). Taking place in NE. Signed on 2005-06-13. Completion date: 2005-09-30.
$56,919 with U.S. Army Corps of Engineers - civil program financing only for Construction of Structures and Facilities -- Highways, Roads, Streets, Bridges, and Railways (includes resurfacing). Taking place in NE. Signed on 2005-06-13. Completion date: 2005-09-30.
- GF FOURTH ST MGMT INC (707 4TH STREET; small business): $86,845 in 2 contracts in 2005
$85,085 with Army for Lodging - Hotel/Motel. Signed on 2005-06-29. Completion date: 2005-08-08.
$1,760, same as above. Signed on 2005-09-07. Completion date: 2005-08-08.
- CUSTOM WOODWORKS LTD (910 STEUBEN STREET; small business): $75,177 in 8 contracts from 2002 to 2005
Contracts for Maintenance, Repair or Alteration of Real Property -- Office Buildings, Cabinets, Lockers, Bins, and Shelving by Army Signed by year: 2000: $0; 2001: $0; 2002: $1,300; 2003: $0; 2004: $46,820; 2005: $27,057; 2006: $0.
Biggest contracts:
$25,970 with Army for Maintenance, Repair or Alteration of Real Property -- Office Buildings. Signed on 2004-02-11. Completion date: 2004-04-05.
$21,979 with Army for Cabinets, Lockers, Bins, and Shelving. Signed on 2005-05-03. Completion date: 2005-09-30.
$8,714, same as above. Signed on 2004-08-20. Completion date: 2004-09-30.
$5,078, same as above. Signed on 2005-02-02. Completion date: 2005-03-23.
Top industries in this zip code by the number of employees in 2005:
- Health Care and Social Assistance: General Medical and Surgical Hospitals (over 1000 employees: 1 establishment)
- Accommodation and Food Services: Full-Service Restaurants (50-99: 3, 20-49: 5, 10-19: 4, 5-9: 3)
- Administrative and Support and Waste Management and Remediation Services: Temporary Help Services (100-249: 2, 20-49: 2, 10-19: 1, 1-4: 2)
- Administrative and Support and Waste Management and Remediation Services: Office Administrative Services (250-499: 1, 1-4: 1)
- Utilities: Electric Power Distribution (100-249: 2)
- Professional, Scientific, and Technical Services: Offices of Lawyers (20-49: 1, 10-19: 4, 5-9: 10, 1-4: 41)
- Health Care and Social Assistance: Home Health Care Services (100-249: 1, 50-99: 1)
- Management of Companies and Enterprises: Corporate, Subsidiary, and Regional Managing Offices (50-99: 2, 20-49: 2, 5-9: 1, 1-4: 1)
- Other Services (except Public Administration): Civic and Social Organizations (100-249: 1, 20-49: 1, 5-9: 1, 1-4: 7)
Age and Sex of Sensory-Disabled Residents (Noninstitutionalized)
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Age and Sex of Physically-Disabled Residents (Noninstitutionalized)
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Age and Sex of Mentally-Disabled Residents (Noninstitutionalized)
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Age and Sex of Self-Care Disabled Residents (Noninstitutionalized)
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Age and Sex of Go-Outside-Home Disabled Residents (Noninstitutionalized)
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Age and Sex of Residents with Employment Disability (Noninst.)
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People in group quarters
- 177 people in local jails and other confinement facilities (including police lockups)
- 21 people in other noninstitutional group quarters
- 15 people in residential treatment centers for emotionally disturbed children
- 15 people in short-term care, detention or diagnostic centers for delinquent children
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