Estimated zip code population in 2021: 3,012 Zip code population in 2010: 2,405 Zip code population in 2000: 2,929
Houses and condos: 1,315 Renter-occupied apartments: 243
% of renters here:
23%
State:
28%
March 2022 cost of living index in zip code 50579: 82.2 (low, U.S. average is 100)
Land area: 137.3 sq. mi. Water area: 1.3 sq. mi.
Population density: 22 people per square mile
(very low).
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Real estate property taxes paid for housing units in 2021:
This zip code:
1.4% ($1,461)
Iowa:
1.5% ($2,618)
Median real estate property taxes paid for housing units with mortgages in 2021: $1,561 (1.6%) Median real estate property taxes paid for housing units with no mortgage in 2021: $1,411 (1.1%)
Business Search- 14 Million verified businesses
Males: 1,770
(58.8%)
Females: 1,242
(41.2%)
For population 25 years and over in 50579:
High school or higher: 92.6%
Bachelor's degree or higher: 18.0%
Graduate or professional degree: 6.3%
Unemployed: 1.8%
Mean travel time to work (commute): 20.2 minutes
For population 15 years and over in 50579:
Never married: 32.0%
Now married: 44.6%
Separated: 3.3%
Widowed: 7.7%
Divorced: 12.5%
Zip code 50579 compared to state average:
Median house value below state average.
Unemployed percentage below state average.
Hispanic race population percentage significantly below state average.
Foreign-born population percentage significantly below state average.
Length of stay since moving in significantly above state average.
Percentage of population with a bachelor's degree or higher below state average.
Estimated median house/condo value in 2021: $105,137
50579:
$105,137
Iowa:
$174,400
According to our research of Iowa and other state lists, there were 2 registered sex offenders living in 50579 zip code as of March 19, 2024. The ratio of all residents to sex offenders in zip code 50579 is 1,409 to 1. The ratio of registered sex offenders to all residents in this zip code is much lower than the state average.
Median resident age:
This zip code:
39.9 years
Iowa median age:
38.5 years
Average household size:
This zip code:
2.3 people
Iowa:
2.4 people
Averages for the 2020 tax year for zip code 50579, filed in 2013:
Average Adjusted Gross Income (AGI) in 2020: $57,334 (Individual Income Tax Returns)
Here:
$57,334
State:
$71,087
Salary/wage: $41,968 (reported on 81.9% of returns)
Here:
$41,968
State:
$57,361
(% of AGI for various income ranges: 1305.6% for AGIs below $25k, 3589.5% for AGIs $25k-50k, 6288.5% for AGIs $50k-75k, 9877.1% for AGIs $75k-100k, 15252.5% for AGIs $100k-200k)
Taxable interest for individuals: $1,737 (reported on 37.1% of returns)
This zip code:
$1,737
Iowa:
$1,633
(% of AGI for various income ranges: 24.4% for AGIs below $25k, 71.1% for AGIs $25k-50k, 108.5% for AGIs $50k-75k, 21.4% for AGIs $75k-100k, 343.8% for AGIs $100k-200k)
Ordinary dividends: $3,386 (reported on 18.1% of returns)
Here:
$3,386
State:
$5,432
(% of AGI for various income ranges: 14.0% for AGIs below $25k, 37.9% for AGIs $25k-50k, 95.4% for AGIs $50k-75k, 496.3% for AGIs $100k-200k)
Net capital gain/loss in AGI: +$11,200 (reported on 15.5% of returns)
Here:
+$11,200
State:
+$15,243
(% of AGI for various income ranges: 37.9% for AGIs $25k-50k, 100.8% for AGIs $50k-75k, 743.8% for AGIs $100k-200k)
Profit/loss from business: +$9,879 (reported on 16.4% of returns)
Here:
+$9,879
State:
+$11,763
(% of AGI for various income ranges: 110.8% for AGIs below $25k, 156.3% for AGIs $25k-50k, 476.9% for AGIs $50k-75k, 853.8% for AGIs $100k-200k)
Taxable individual retirement arrangement distribution: $12,410 (reported on 8.6% of returns)
50579:
$12,410
Iowa:
$17,324
(% of AGI for various income ranges: 40.0% for AGIs below $25k, 72.6% for AGIs $25k-50k, 205.4% for AGIs $50k-75k, 920.0% for AGIs $100k-200k)
Total itemized deductions: $32,750 (reported on 3.4% of returns)
Here:
$32,750
State:
$33,775
(% of AGI for various income ranges: 1007.7% for AGIs $50k-75k)
Charity contributions: $5,200 (reported on 2.6% of returns)
Here:
$5,200
State:
$13,075
(% of AGI for various income ranges: 120.0% for AGIs $50k-75k)
Taxes paid: $6,575 (reported on 3.4% of returns)
50579:
$6,575
State:
$7,704
(% of AGI for various income ranges: 48.4% for AGIs $25k-50k, 244.3% for AGIs $75k-100k)
Earned income credit: $2,069 (reported on 13.8% of returns)
Here:
$2,069
State:
$2,195
(% of AGI for various income ranges: 86.8% for AGIs below $25k, 60.0% for AGIs $25k-50k)
Percentage of individuals using paid preparers for their 2020 taxes: 94.0%
Here:
94%
State:
95%
(% for various income ranges: 85.0% for AGIs below $25k, 100.0% for AGIs $25k-50k, 100.0% for AGIs $50k-75k, 100.0% for AGIs $75k-100k, 94.1% for AGIs $100k-200k, 100.0% for AGIs over 200k)
Averages for the 2012 tax year for zip code 50579, filed in 2013:
Average Adjusted Gross Income (AGI) in 2012: $57,529 (Individual Income Tax Returns)
Here:
$57,529
State:
$58,860
Salary/wage: $38,290 (reported on 80.7% of returns)
Here:
$38,290
State:
$46,659
(% of AGI for various income ranges: 68.0% for AGIs below $25k, 72.7% for AGIs $25k-50k, 69.3% for AGIs $50k-75k, 60.4% for AGIs $75k-100k, 59.9% for AGIs $100k-200k)
Taxable interest for individuals: $1,735 (reported on 42.2% of returns)
This zip code:
$1,735
Iowa:
$1,537
(% of AGI for various income ranges: 2.3% for AGIs below $25k, 1.6% for AGIs $25k-50k, 1.0% for AGIs $50k-75k, 0.9% for AGIs $75k-100k, 1.2% for AGIs $100k-200k, 1.3% for AGIs over 200k)
Ordinary dividends: $2,026 (reported on 24.8% of returns)
Here:
$2,026
State:
$4,542
(% of AGI for various income ranges: 1.4% for AGIs below $25k, 0.4% for AGIs $25k-50k, 0.5% for AGIs $50k-75k, 1.0% for AGIs $75k-100k, 0.7% for AGIs $100k-200k, 1.5% for AGIs over 200k)
Net capital gain/loss in AGI: +$3,837 (reported on 17.4% of returns)
Here:
+$3,837
State:
+$11,802
(% of AGI for various income ranges: 0.2% for AGIs $25k-50k, 1.7% for AGIs $75k-100k, 0.6% for AGIs $100k-200k, 4.0% for AGIs over 200k)
Profit/loss from business: +$8,762 (reported on 19.3% of returns)
Here:
+$8,762
State:
+$10,509
(% of AGI for various income ranges: 4.4% for AGIs below $25k, 2.8% for AGIs $25k-50k, 3.4% for AGIs $50k-75k, 2.4% for AGIs $75k-100k, 4.6% for AGIs $100k-200k)
Taxable individual retirement arrangement distribution: $10,514 (reported on 12.8% of returns)
50579:
$10,514
Iowa:
$11,773
(% of AGI for various income ranges: 4.4% for AGIs below $25k, 2.6% for AGIs $25k-50k, 1.6% for AGIs $50k-75k, 3.5% for AGIs $75k-100k, 3.0% for AGIs $100k-200k)
Self-employment retirement plans: $28,350 (reported on 1.8% of returns)
50579:
$28,350
Iowa:
$18,614
Total itemized deductions: $20,421 (20% of AGI, reported on 25.7% of returns)
Here:
$20,421
State:
$21,278
Here:
20.1% of AGI
State:
18.9% of AGI
(% of AGI for various income ranges: 13.8% for AGIs below $25k, 6.6% for AGIs $25k-50k, 7.5% for AGIs $50k-75k, 8.5% for AGIs $75k-100k, 9.6% for AGIs $100k-200k, 10.9% for AGIs over 200k)
Charity contributions: $3,179 (reported on 22.0% of returns)
Here:
$3,179
State:
$4,044
(% of AGI for various income ranges: 1.3% for AGIs below $25k, 0.9% for AGIs $25k-50k, 0.7% for AGIs $50k-75k, 1.1% for AGIs $75k-100k, 1.6% for AGIs $100k-200k, 1.6% for AGIs over 200k)
Taxes paid: $6,782 (reported on 25.7% of returns)
50579:
$6,782
State:
$8,846
(% of AGI for various income ranges: 2.0% for AGIs below $25k, 1.6% for AGIs $25k-50k, 1.8% for AGIs $50k-75k, 2.7% for AGIs $75k-100k, 4.3% for AGIs $100k-200k, 4.5% for AGIs over 200k)
Earned income credit: $1,963 (reported on 14.7% of returns)
Here:
$1,963
State:
$2,098
(% of AGI for various income ranges: 5.0% for AGIs below $25k, 0.9% for AGIs $25k-50k)
Percentage of individuals using paid preparers for their 2012 taxes: 79.8%
Here:
80%
State:
65%
(% for various income ranges: 73.7% for AGIs below $25k, 73.1% for AGIs $25k-50k, 77.8% for AGIs $50k-75k, 91.7% for AGIs $75k-100k, 100.0% for AGIs $100k-200k, 100.0% for AGIs over 200k)
Averages for the 2004 tax year for zip code 50579, filed in 2005:
Average Adjusted Gross Income (AGI) in 2004: $37,065 (Individual Income Tax Returns)
Here:
$37,065
State:
$43,875
Salary/wage: $29,314 (reported on 79.6% of returns)
Here:
$29,314
State:
$38,265
(% of AGI for various income ranges: 118.0% for AGIs below $10k, 63.0% for AGIs $10k-25k, 65.8% for AGIs $25k-50k, 74.3% for AGIs $50k-75k, 61.9% for AGIs $75k-100k, 38.8% for AGIs over 100k)
Taxable interest for individuals: $1,808 (reported on 53.5% of returns)
This zip code:
$1,808
Iowa:
$1,768
(% of AGI for various income ranges: 11.3% for AGIs below $10k, 5.3% for AGIs $10k-25k, 1.9% for AGIs $25k-50k, 2.1% for AGIs $50k-75k, 1.9% for AGIs $75k-100k, 2.5% for AGIs over 100k)
Taxable dividends: $1,929 (reported on 24.7% of returns)
Here:
$1,929
State:
$2,510
(% of AGI for various income ranges: 2.8% for AGIs below $10k, 1.2% for AGIs $10k-25k, 1.3% for AGIs $25k-50k, 0.4% for AGIs $50k-75k, 1.6% for AGIs $75k-100k, 2.2% for AGIs over 100k)
Net capital gain/loss: +$6,234 (reported on 21.4% of returns)
Here:
+$6,234
State:
+$6,139
(% of AGI for various income ranges: 3.8% for AGIs below $10k, -0.6% for AGIs $10k-25k, 2.9% for AGIs $25k-50k, 0.5% for AGIs $50k-75k, 2.3% for AGIs $75k-100k, 11.8% for AGIs over 100k)
Profit/loss from business: +$7,198 (reported on 18.5% of returns)
Here:
+$7,198
State:
+$8,574
(% of AGI for various income ranges: 6.2% for AGIs below $10k, 2.8% for AGIs $10k-25k, 4.2% for AGIs $25k-50k, 4.3% for AGIs $50k-75k, 1.2% for AGIs $75k-100k, 3.6% for AGIs over 100k)
Profit/loss from farming: +$4,876 (reported on 12.8% of returns)
Here:
+$4,876
State:
-$74
(% of AGI for various income ranges: 4.9% for AGIs below $10k, 1.0% for AGIs $10k-25k, 0.7% for AGIs $25k-50k, 3.8% for AGIs $50k-75k, 1.8% for AGIs $75k-100k)
IRA payment deduction: $3,352 (reported on 4.5% of returns)
50579:
$3,352
Iowa:
$2,970
Total itemized deductions: $16,395 (25% of AGI, reported on 21.5% of returns)
Here:
$16,395
State:
$16,976
Here:
24.9% of AGI
State:
20.8% of AGI
(% of AGI for various income ranges: 14.8% for AGIs below $10k, 15.4% for AGIs $10k-25k, 7.7% for AGIs $25k-50k, 5.6% for AGIs $50k-75k, 10.5% for AGIs $75k-100k, 13.1% for AGIs over 100k)
Charity contributions deductions: $3,201 (5% of AGI, reported on 18.7% of returns)
Here:
$3,201
State:
$3,089
Here:
4.7% of AGI
State:
3.6% of AGI
(% of AGI for various income ranges: 1.2% for AGIs below $10k, 1.3% for AGIs $10k-25k, 1.0% for AGIs $25k-50k, 0.7% for AGIs $50k-75k, 2.0% for AGIs $75k-100k, 3.6% for AGIs over 100k)
Total tax: $4,826 (reported on 74.6% of returns)
50579:
$4,826
State:
$6,177
(% of AGI for various income ranges: 3.4% for AGIs below $10k, 4.0% for AGIs $10k-25k, 7.0% for AGIs $25k-50k, 9.1% for AGIs $50k-75k, 11.0% for AGIs $75k-100k, 16.9% for AGIs over 100k)
Earned income credit: $1,268 (reported on 13.7% of returns)
Here:
$1,268
State:
$1,540
Percentage of individuals using paid preparers for their 2004 taxes: 80.1%
Here:
80%
State:
70%
(% for various income ranges: 64.1% for AGIs below $10k, 78.9% for AGIs $10k-25k, 85.7% for AGIs $25k-50k, 87.4% for AGIs $50k-75k, 86.8% for AGIs $75k-100k, 95.1% for AGIs over 100k)
Likely homosexual households (counted as self-reported same-sex unmarried-partner households)
Lesbian couples: 0.6% of all households
Gay men: 0.0% of all households
Household received Food Stamps/SNAP in the past 12 months: 124 Household did not receive Food Stamps/SNAP in the past 12 months: 932
Women who had a birth in the past 12 months: 14 (10 now married, 3 unmarried) Women who did not have a birth in the past 12 months: 448 (234 now married, 212 unmarried)
Housing units in zip code 50579 with a mortgage: 316 (16 second mortgage, 14 both second mortgage and home equity loan) Houses without a mortgage: 14
Median monthly owner costs for units with a mortgage: $999 Median monthly owner costs for units without a mortgage: $419
Residents with income below the poverty level in 2021:
This zip code:
11.4%
Whole state:
11.1%
Residents with income below 50% of the poverty level in 2021:
This zip code:
3.8%
Whole state:
6.0%
Median number of rooms in houses and condos:
Here:
7.0
State:
6.8
Median number of rooms in apartments:
Here:
5.0
State:
4.2
Notable locations in this zip code not listed on our city pages
Notable locations in zip code 50579: Highway Number Twenty Rest Area (A), Richards (B), Sherwood (C), Farmers Co-op Elevator (D), Rockwell City (E), Twin Lakes Golf Club (F), Iowa State Reformatory for Women (G), Rockwell City Emergency Medical Services (H), Calhoun County Historical Library (I), Calhoun County Museum (J), Calhoun County Sheriff's Office (K), Calhoun County Courthouse (L), Rockwell City Fire Department (M), Rockwell City Library (N), Rockwell City Hall (O), North Central Correctional Facility (P), Calhoun County Home (Q). Display/hide their locations on the map
Churches in zip code 50579 include: Saint Paul American Lutheran Church (A), Saint Francis Catholic Church (B), Presbyterian Church (C), Church of Christ (D), Evangelical Free Church (E), Rockwell City United Methodist Church (F), Immanuel Church (G). Display/hide their locations on the map
Cemeteries: Rosehill Cemetery (1), Roby Cemetery (2), Piper Cemetery (3), Greenwood Cemetery (4), Saint Francis Cemetery (5), Reformatory Cemetery (6), Twin Lakes Cemetery (7). Display/hide their locations on the map
Parks in zip code 50579 include: North Twin Lake Wildlife Management Area (1), South Twin Lake Wildlife Management Area (2), Highway Number Four Recreation Area (3), Logan Wildlife Area (4), Center Wildlife Area (5), Featherstone Memorial County Park (6), Rockwell City Park (7), Site of Pioneer Children's Grave Historical Marker (8). Display/hide their locations on the map
In group quarters: 584 (-1 institutionalized population)
Size of family households: 342 2-persons, 93 3-persons, 147 4-persons, 43 5-persons, 26 6-persons, 8 7-or-more-persons
Size of nonfamily households: 374 1-person, 16 2-persons, 3 3-persons
327 married couples with children.
215 single-parent households (46 men, 169 women).
98.6% of residents of 50579 zip code speak English at home.
0.7% of residents speak Spanish at home (70% very well, 30% not well).
0.5% of residents speak other Indo-European language at home (100% very well).
0.2% of residents speak Asian or Pacific Island language at home (20% very well, 80% well).
Foreign born population: 35 (1.2%) (83.7% of them are naturalized citizens)
This zip code:
1.2%
Whole state:
5.4%
34%Eritrea
26%Japan
3%Hong Kong
3%Indonesia
44%German
15%Irish
9%American
4%English
3%Swedish
2%Norwegian
2%European
Year of entry for the foreign-born population
62010 or later
92000 to 2009
51990 to 1999
14Before 1990
Major facilities with environmental interests located in this zip code:
ROCKWELL CITY ELEMENTARY SCHOOL (330 BROWER STREET in ROCKWELL CITY, IA)
(Geographic Names Information System) (National Center for Education Statistics) - STATE ID-135625 427 Organizations: ROCKWELL CITY-LYTTON COMM SCHOOL DISTRICT (SCHOOL DISTRICT)
ROCKWELL CITY-LYTTON HIGH SCHOOL (1000 TONAWANDA AVE in ROCKWELL CITY, IA)
(National Center for Education Statistics) - STATE ID-135625 172 Organizations: ROCKWELL CITY-LYTTON COMM SCHOOL DISTRICT (SCHOOL DISTRICT)
ROCKWELL CITY SEWAGE TREATMENT PLANT (335 MAIN STREET in ROCKWELL CITY, IA)
National Pollutant Discharge Elimination System MAJOR (Tracking pollutant discharge elimination systems) - permit National Pollutant Discharge Elimination System NON-MAJOR (Tracking pollutant discharge elimination systems) - permit Business SIC classification: SEWERAGE SYSTEMS Organizations: CITY OF ROCKWELL CITY (CONTACT/OWNER)
, ROCKWELL, CITY OF STP (CONTACT/OWNER)
Alternative names: ROCKWELL CITY, CITY OF STP, ROCKWELL CITY OF STP
US POST OFFICE (520 4TH ST in ROCKWELL CITY, IA) . Federal Facility
SAFETY-KLEEN HOUSEHOLD HAZARDOUS WASTE (105 EAST COURT STREET in ROCKWELL CITY, IA)
(Resource Conservation and Recovery Act (tracking hazardous waste)) Organizations: ROCKWELL CITY SECONDARY ROAD COMPLEX (CONTACT/OWNER)
TWIN LAKES SANITARY SEWER DISTRICT (2202 OGDEN AVENUE in ROCKWELL CITY, IA)
National Pollutant Discharge Elimination System NON-MAJOR (Tracking pollutant discharge elimination systems) - permit Business SIC classification: SEWERAGE SYSTEMS Organizations: TWIN LAKES SANITARY DISTRICT S (CONTACT/OWNER)
NORTHERN NATURAL GAS CO (2710 PRESTON AVE in ROCKWELL CITY, IA)
(Resource Conservation and Recovery Act (tracking hazardous waste))
AMERICAN CONCRETE PRODUCTS INCORPORATED (HIGHWAY 20 WEST in ROCKWELL CITY, IA)
AIR MINOR (AIRS/AFS) Business SIC classification: READY-MIXED CONCRETE
C&S PRODUCTS CO INC (305 LAPEDALE DR in ROCKWELL CITY, IA)
AIR MINOR (AIRS/AFS) Business SIC classification: WOOD PRODUCTS Alternative names: CLOSED FACILITY -- C&S PRODUCTS CO INC, SAW MILL VALLEY, SAWMILL VALLEY WOODCRAFTERS
CAL-CAR SERVICE CO (NO STREET ADDRESS in ROCKWELL CITY, IA)
AIR MINOR (AIRS/AFS) Business SIC classification: GRAIN AND FIELD BEANS
RICHARDS COOP (NO STREET ADDRESS in RICHARDS, IA)
AIR MINOR (AIRS/AFS) Business SIC classification: NONCLASSIFIABLE ESTABLISHMENTS
ROCKWELL CITY-LYTTON SCHOOL DISTRICT (1000 WEST TONAWANDA AVE. in ROCKWELL CITY, IA)
COMPLIANCE ACTIVITY (Tracking inspections of insecticide, fungicide, and rodenticide, and toxic substances) Alternative names: ROCKWELL CITY-LYTTON CSD
NEW COOPERATIVE INCORPORATED (2764 320TH STREET in RANDS, IA)
AIR MINOR (AIRS/AFS) Business SIC classification: NONCLASSIFIABLE ESTABLISHMENTS Alternative names: RANDS ELEVATOR CO.
Housing units lacking complete plumbing facilities: 1.3% Housing units lacking complete kitchen facilities: 3.4%
60.4%Utility gas
26.4%Electricity
9.1%Bottled, tank, or LP gas
2.1%No fuel used
1.9%Wood
Population in 1990: 2,952.
Place of birth for U.S.-born residents:
This state: 2,394
Northeast: 27
Midwest: 280
South: 82
West: 185
56% of the 50579 zip code residents lived in the same house 5 years ago. Out of people who lived in different houses, 41% lived in this county. Out of people who lived in different counties, 50% lived in Iowa.
76% of the 50579 zip code residents lived in the same house 1 year ago. Out of people who lived in different houses, 15% moved from this county. Out of people who lived in different houses, 75% moved from different county within same state. Out of people who lived in different houses, 11% moved from different state.
Private vs. public school enrollment:
Students in private schools in grades 1 to 8 (elementary and middle school):
Here:
0.0%
Iowa:
11.9%
Students in private schools in grades 9 to 12 (high school): 3
Here:
1.6%
Iowa:
7.4%
Students in private undergraduate colleges: 11
Here:
9.0%
Iowa:
24.9%
Occupation by median earnings in the past 12 months ($)
80,133Business and financial operations occupations
61,464Law enforcement workers including supervisors
61,188Health diagnosing and treating practitioners and other technical occupations
58,058Health technologists and technicians
55,642Installation, maintenance, and repair occupations
53,824Farming, fishing, and forestry occupations
Top industries in this zip code by the number of employees in 2005:
Accommodation and Food Services: Limited-Service Restaurants (20-49 employees: 1 establishment)
Health Care and Social Assistance: Nursing Care Facilities (20-49: 1)
Finance and Insurance: Commercial Banking (10-19: 2)
Utilities: Electric Power Distribution (10-19: 1, 5-9: 1)
Other Services (except Public Administration): Religious Organizations (5-9: 3)
Health Care and Social Assistance: Offices of Physicians (except Mental Health Specialists) (10-19: 1)
Construction: Power and Communication Line and Related Structures Construction (10-19: 1)
People in group quarters in 2010:
34 people in nursing facilities/skilled-nursing facilities
20 people in group homes intended for adults
People in group quarters in 2000:
408 people in state prisons
41 people in nursing homes
32 people in homes for the mentally retarded
16 people in other group homes
8 people in homes or halfway houses for drug/alcohol abuse
Fatal accident statistics in 2011:
Fatal accident count: 2
Vehicles involved in fatal accidents: 2
Fatal accidents caused by drunken drivers: 1
Fatalities: 2
Persons involved in fatal accidents: 2
Pedestrians involved in fatal accidents: 0
2003 - 2018 National Fire Incident Reporting System (NFIRS) incidents
Based on the data from the years 2003 - 2018 the average number of fire incidents per year is 12. The highest number of reported fires - 23 took place in 2011, and the least - 0 in 2006. The data has a decreasing trend.
When looking into fire subcategories, the most reports belonged to: Outside Fires (40.3%), and Structure Fires (36.6%).
Fire incident types reported to NFIRS in Zip Code 50579