Median household income (1999): $74,655
Estimated median household income in 2005: $85,752
| This zip code |  $85,752 | | Maryland: |  $61,592 |
Nearest zip codes: 20855, 20880, 20877, 20851, 20854, 20852.
Housing units in zip code 20850 with a mortgage: 6,135 (771 second mortgage, 657 home equity loan, 28 both second mortgage and home equity loan)
Houses without a mortgage: 1,218
Median monthly owner costs for units with a mortgage: $1,736
Median monthly owner costs for units without a mortgage: $456
Residents with income below the poverty level in 1999:
| This zip code: | 6.8% | | Whole state: | 8.5% |
Residents with income below 50% of the poverty level in 1999:
| This zip code: | 3.4% | | Whole state: | 4.2% |
| Here: | 7.6 | | State: | 6.9 |
Median number of rooms in apartments:
| Here: | 4.4 | | State: | 4.2 |
Year house built:
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- 1999 to March 2000: 954
- 1995 to 1998: 1,691
- 1990 to 1994: 1,298
- 1980 to 1989: 1,255
- 1970 to 1979: 2,713
- 1960 to 1969: 2,357
- 1950 to 1959: 1,279
- 1940 to 1949: 393
- 1939 or earlier: 560
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Bedrooms in owner-occupied houses in Rockville, MD (20850):
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- no bedroom: 54
- 1 bedrooms: 308
- 2 bedrooms: 1,153
- 3 bedrooms: 2,946
- 4 bedrooms: 2,979
- 5 or more bedrooms: 1,230
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Bedrooms in renter-occupied apartments and housing units:
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- no bedroom: 160
- 1 bedrooms: 879
- 2 bedrooms: 1,101
- 3 bedrooms: 809
- 4 bedrooms: 323
- 5 or more bedrooms: 65
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Vehicles available in 20850 zip code in owner-occupied houses/condos:
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- no vehicle: 255
- 1 vehicle: 2,397
- 2 vehicles: 4,289
- 3 vehicles: 1,332
- 4 vehicles: 306
- 5 or more vehicles: 91
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Vehicles available in renter-occupied apartments:
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- no vehicle: 665
- 1 vehicle: 1,555
- 2 vehicles: 861
- 3 vehicles: 205
- 4 vehicles: 22
- 5 or more vehicles: 29
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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 20850:
- Less than $10,000: 5
- $10,000 to $14,999: 8
- $15,000 to $19,999: 22
- $20,000 to $24,999: 16
- $25,000 to $29,999: 10
- $35,000 to $39,999: 7
- $40,000 to $49,999: 7
- $50,000 to $59,999: 7
- $60,000 to $69,999: 5
- $70,000 to $79,999: 15
- $80,000 to $89,999: 53
- $90,000 to $99,999: 107
- $100,000 to $124,999: 416
- $125,000 to $149,999: 658
- $150,000 to $174,999: 731
- $175,000 to $199,999: 423
- $200,000 to $249,999: 1055
- $250,000 to $299,999: 1163
- $300,000 to $399,999: 1278
- $400,000 to $499,999: 620
- $500,000 to $749,999: 619
- $750,000 to $999,999: 72
- $1,000,000 or more: 56
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Rent paid by renters in 2000 in zip code 20850:
- Less than $100: 149
- $100 to $149: 17
- $150 to $199: 50
- $200 to $249: 50
- $250 to $299: 124
- $300 to $349: 41
- $350 to $399: 52
- $400 to $449: 116
- $450 to $499: 43
- $500 to $549: 50
- $550 to $599: 61
- $600 to $649: 54
- $650 to $699: 81
- $700 to $749: 92
- $750 to $799: 258
- $800 to $899: 343
- $900 to $999: 251
- $1,000 to $1,249: 660
- $1,250 to $1,499: 494
- $1,500 to $1,999: 205
- $2,000 or more: 26
- No cash rent: 111
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Median price asked for vacant for-sale houses in 2000: $284,400
Estimated median house (or condo) value in 2005 for: - White Non-Hispanic householders: $576,096
- Black or African American householders: $301,659
- American Indian or Alaska Native householders: $322,684
- Asian householders: $708,666
- Native Hawaiian and other Pacific Islander householders: $248,985
- Some other race householders: $308,741
- Two or more races householders: $418,294
- Hispanic or Latino householders: $326,225
Housing units in structures:
- One, detached: 6,336
- One, attached: 3,086
- Two: 52
- 3 or 4: 226
- 5 to 9: 619
- 10 to 19: 911
- 20 to 49: 540
- 50 or more: 711
- Mobile homes: 19
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Means of transportation to work
- Drove a car alone: 12,073 (71%)
- Carpooled: 1,610 (9%)
- Bus or trolley bus: 591 (3%)
- Streetcar or trolley car: 16 (0%)
- Subway or elevated: 1,424 (8%)
- Railroad: 63 (0%)
- Taxi: 40 (0%)
- Bicycle: 13 (0%)
- Walked: 274 (2%)
- Other means: 65 (0%)
- Worked at home: 857 (5%)
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Travel time to work
- Less than 5 minutes: 186
- 5 to 9 minutes: 1053
- 10 to 14 minutes: 2028
- 15 to 19 minutes: 2151
- 20 to 24 minutes: 1952
- 25 to 29 minutes: 744
- 30 to 34 minutes: 2154
- 35 to 39 minutes: 610
- 40 to 44 minutes: 887
- 45 to 59 minutes: 2357
- 60 to 89 minutes: 1794
- 90 or more minutes: 253
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Percentage of zip code residents living and working in this county: 65.9%
Household type by relationship
Households: 31,955
- In family households: 27,503 (6,318 male householders, 2,208 female householders)
6,996 spouses, 9,747 children (9,396 natural, 153 adopted, 198 stepchildren), 270 grandchildren, 289 brothers or sisters, 355 parents, 619 other relatives, 701 non-relatives
- In nonfamily households: 4,452 (1,352 male householders (923 living alone)), 2,155 female householders (1,887 living alone)), 945 nonrelatives
- In group quarters: 1,322 (1,007 institutionalized population)
Size of family households: 3,200 2-persons, 2,040 3-persons, 2,059 4-persons, 787 5-persons, 297 6-persons, 143 7-or-more-persons.
Size of nonfamily households: 2,810 1-person, 516 2-persons, 141 3-persons, 30 4-persons, 10 5-persons.
6,442 married couples with children.
1,481 single-parent households (276 men, 1,205 women).
65.9% of residents of 20850 zip code speak English at home.
9.2% of residents speak Spanish at home (55% very well, 25% well, 15% not well, 5% not at all).
9.8% of residents speak other Indo-European language at home (73% very well, 17% well, 9% not well, 1% not at all).
13.3% of residents speak Asian or Pacific Island language at home (51% very well, 34% well, 13% not well, 3% not at all).
1.8% of residents speak other language at home (74% very well, 17% well, 9% not well).
Foreign born population: 9,132 (27.2%)
(46.2% of them are naturalized citizens)
| This zip code: | 27.2% | | Whole state: | 9.8% |
Most common places of birth for the foreign-born residents:
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- China, excluding Hong Kong and Taiwan (12%)
- Korea (8%)
- Taiwan (7%)
- El Salvador (6%)
- India (6%)
- Iran (5%)
- Vietnam (3%)
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Year of entry for the foreign-born population
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- 1995 to March 2000: 2,404
- 1990 to 1994: 1,835
- 1985 to 1989: 1,579
- 1980 to 1984: 1,046
- 1975 to 1979: 856
- 1970 to 1974: 514
- 1970 to 1974: 361
- 1965 to 1969: 537
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First ancestries reported:
- Other groups: 11582
- Irish: 2471
- German: 2087
- English: 2056
- United States or American: 1584
- Italian: 1162
- Russian: 1143
- Polish: 757
- European: 643
- Iranian: 528
- Scottish: 439
- Subsaharan African:: 428
- French (except Basque): 401
- Eastern European: 388
- West Indian (excluding Hispanic groups):: 317
- Arab:: 296
- Scotch-Irish: 256
- British: 241
- Swedish: 238
- Greek: 189
- Brazilian: 185
- Jamaican: 171
- Dutch: 170
- French Canadian: 151
- Austrian: 146
- Norwegian: 141
- Ukrainian: 130
- African: 120
- Lithuanian: 117
- Northern European: 111
- Romanian: 108
- Welsh: 107
- Armenian: 100
- Israeli: 97
- Other Subsaharan African: 90
- Czech: 87
- Ethiopian: 85
- Lebanese: 84
- Hungarian: 78
- Other Arab: 76
- Danish: 72
- Canadian: 71
- Portuguese: 63
- Czechoslovakian: 63
- Haitian: 53
- Australian: 47
- Nigerian: 43
- Palestinian: 42
- Latvian: 40
- Trinidadian and Tobagonian: 40
- Slovak: 36
- Belgian: 32
- Other West Indian: 32
- Turkish: 29
- Sierra Leonean: 28
- Moroccan: 28
- Bulgarian: 27
- Ugandan: 25
- Egyptian: 22
- Yugoslavian: 20
- Estonian: 18
- Arab/Arabic: 18
- Syrian: 17
- Swiss: 17
- Pennsylvania German: 15
- Afghan: 14
- Guyanese: 13
- Croatian: 13
- Senegalese: 8
- Zairian: 8
- Bermudan: 8
- Luxemburger: 8
- Celtic: 7
- Bahamian: 7
- Cape Verdean: 6
- South African: 6
- West Indian: 6
- Scandinavian: 5
- Iraqi: 5
- Ghanian: 5
- Macedonian: 5
- Liberian: 4
- Jordanian: 4
Median worth of mobile homes: $187,500
Housing units lacking complete plumbing facilities: 0%
Housing units lacking complete kitchen facilities: 0%
Most commonly used house heating fuel:
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- Utility gas (79%)
- Electricity (16%)
- Fuel oil, kerosene, etc. (5%)
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Place of birth for U.S.-born residents:
- This state: 8044
- Northeast: 5337
- Midwest: 2392
- South: 6770
- West: 1081
47% of the 20850 zip code residents lived in the same house 5 years ago.
Out of people who lived in different houses, 65% lived in this county.
Out of people who lived in different counties, 25% lived in Maryland.
Population in 1990: 24,215. Population change in the 1990s: +9,342 (+38.6%).
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): 513
| Here: | 13.7% | | Maryland: | 14.8% |
Students in private schools in grades 9 to 12 (high school): 268
| Here: | 12.6% | | Maryland: | 13.3% |
Students in private undergraduate colleges: 268
| Here: | 18.7% | | Maryland: | 21.7% |
School Enrollment by Level of School
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Top industries in this zip code by the number of employees in 2005:
- Professional, Scientific, and Technical Services: Research and Development in the Physical, Engineering, and Life Sciences (500-999 employees: 1 establishment, 250-499 employees: 3 establishments, 100-249 employees: 3 establishments, 50-99 employees: 5 establishments, 20-49 employees: 9 establishments, 10-19 employees: 13 establishments, 5-9 employees: 5 establishments, 1-4 employees: 16 establishments)
- Professional, Scientific, and Technical Services: Offices of Lawyers (over 1000: 1, 50-99: 1, 20-49: 11, 10-19: 14, 5-9: 28, 1-4: 173)
- Professional, Scientific, and Technical Services: Computer Systems Design Services (100-249: 4, 50-99: 8, 20-49: 7, 10-19: 7, 5-9: 7, 1-4: 32)
- Information: Data Processing, Hosting, and Related Services (250-499: 3, 100-249: 2, 20-49: 3, 10-19: 2, 5-9: 4, 1-4: 10)
- Professional, Scientific, and Technical Services: Research and Development in the Social Sciences and Humanities (over 1000: 1, 1-4: 2)
- Real Estate and Rental and Leasing: Passenger Car Rental (over 1000: 1, 1-4: 1)
- Health Care and Social Assistance: General Medical and Surgical Hospitals (over 1000: 1)
- Management of Companies and Enterprises: Corporate, Subsidiary, and Regional Managing Offices (100-249: 6, 50-99: 3, 20-49: 3, 10-19: 4, 5-9: 1, 1-4: 7)
- Construction: Plumbing, Heating, and Air-Conditioning Contractors (250-499: 2, 100-249: 1, 50-99: 5, 10-19: 5, 5-9: 5, 1-4: 5)
- Health Care and Social Assistance: Offices of Physicians (except Mental Health Specialists) (50-99: 4, 20-49: 10, 10-19: 22, 5-9: 30, 1-4: 51)
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 (Noninstitutionalized)
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People in group quarters
- 717 people in nursing homes
- 215 people in mental (psychiatric) hospitals or wards
- 209 people in other noninstitutional group quarters
- 72 people in homes for the mentally ill
- 59 people in short-term care, detention or diagnostic centers for delinquent children
- 22 people in homes for the mentally retarded
- 18 people in other nonhousehold living situations
- 13 people in homes for abused, dependent, and neglected children
- 6 people in homes for the physically handicapped
- 2 people in other group homes
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