Residential delivery area · Iowa
ZIP Code 50579: Rockwell City, IA
ZIP code 50579 uses the postal name Rockwell City, Iowa and lies entirely in Calhoun County (Census 2020 ZIP-county file). About 3,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $61,108 (Census Bureau, ACS 2020-2024). By Census place, 3% of its land lies in Rockwell City; 97% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2023
- ZBP2023
- IRS2022
- Town
- Rockwell City · its only residential ZIP
- County
- Calhoun County
- Census places
- Rockwell City
- House district
- IA-4 119th Congress
- State
- Iowa
- Time zone
- Central
- Land area
- 140.6 sq mi · 22 people per sq mi
Where is ZIP code 50579?
50579 centers on 42.394°, -94.634° and covers 140.6 square miles of land plus 1.3 of water. It borders 7 ZIP codes: 50551, 51453, 51449, 50586, 50563, 50561, 50575.
The map draws ZIP code areas only. For the streets inside 50579, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 50579 compare with the rest of Calhoun County?
| Measure | 50579 | In Calhoun County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 3,034 | 1st of 15 | 199th of 970 |
| Median household income | $61k | 3rd of 3 | 352nd of 396 |
| Median home value | $126k | 3rd of 4 | 366th of 423 |
Its median household income is higher than in 31% of U.S. residential ZIP codes, and it is denser than 27% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 50579?
The 2020 Census counted 2,895 people in 50579; the ACS, which samples households over 2020-2024, estimates 3,034. Between the 2010 and 2020 censuses its population grew 20.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 3,034
- 2020 Census count
- 2,895+20.4% since 2010 (2,405)
- Households
- 1,085
- Median age
- 42.2
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 50579?
Of the 3,034 people the ACS estimates in 50579, 18.5% are under 18 and 21.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (87.4%).
- Under 1818.5%
- 18 to 6460.3%
- 65 and older21.2%
- White, not Hispanic87.4%
- Hispanic or Latino4.7%
- Other or two or more4.2%
- Black, not Hispanic3.5%
- Asian, not Hispanic0.2%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 50579 earn?
Median household income is $61,108 (ACS 2020-2024), the 3rd highest of the 3 ranked ZIP codes in Calhoun County. It is not measurably different from 2015-2019 ($59,654 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $61,108±$6,846
- Income per person
- $30,688
- Below the poverty line
- 9.1%
- Unemployed (of the labor force)
- 1.2%
- Adults 25+ with a bachelor's degree
- 19.1%
- Adjusted gross income per tax return, 2022
- $73,9581,100 returns; wages 53% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 50579?
- Median home value (owners' estimate)
- $126,000
- Median gross rent
- $777
- Homes owned by their occupants
- 78.2%
- Housing units
- 1,364
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 50579?
77 business establishments had a location in this ZIP code in 2023, 1 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade15
- Other services (except public administration)11
- Health care and social assistance10
- Transportation and warehousing9
- Construction5
- Finance and insurance5
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 50579?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 50551 | Jolley | 96 | – | 8.7 mi |
| 51453 | Lohrville | 500 | $87k | 10.2 mi |
| 51449 | Lake City | 1,950 | $75k | 10.2 mi |
| 50586 | Somers | 272 | $55k | 10.7 mi |
| 50563 | Manson | 2,505 | $71k | 10.8 mi |
| 50561 | Lytton | 585 | $67k | 11.2 mi |
| 50575 | Pomeroy | 696 | $53k | 11.9 mi |
| 50552 | Knierim | 76 | $89k | 9.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.