Residential delivery area · Iowa
ZIP Code 52577: Oskaloosa, IA
ZIP code 52577 uses the postal name Oskaloosa, Iowa and lies entirely in Mahaska County (Census 2020 ZIP-county file). About 15,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $66,084 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Oskaloosa (5%) and Keomah Village (0%); 95% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Oskaloosa · its only residential ZIP
- County
- Mahaska County
- Census places
- Oskaloosa (5%); Keomah Village (0%)
- Micro area
- Oskaloosa, IA
- House district
- IA-1 119th Congress
- State
- Iowa
- Time zone
- Central
- Land area
- 158.3 sq mi · 92 people per sq mi
Where is ZIP code 52577?
52577 centers on 41.273°, -92.662° and covers 158.3 square miles of land plus 1.5 of water. It borders 10 ZIP codes: 52534, 52595, 52553, 50143, 52543, 50207, 52561, 52586, 50256, 50044.
The map draws ZIP code areas only. For the streets inside 52577, 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 52577 compare with the rest of Mahaska County?
| Measure | 52577 | In Mahaska County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 14,585 | 1st of 19 | 58th of 970 |
| Median household income | $66k | 5th of 7 | 302nd of 396 |
| Median home value | $163k | 4th of 7 | 280th of 423 |
Its median household income is higher than in 40% of U.S. residential ZIP codes, and it is denser than 53% 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 52577?
The 2020 Census counted 14,974 people in 52577; the ACS, which samples households over 2020-2024, estimates 14,585. Between the 2010 and 2020 censuses its population fell 0.5% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 14,585
- 2020 Census count
- 14,974−0.5% since 2010 (15,055)
- Households
- 5,737
- Median age
- 39.3
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 52577?
Of the 14,585 people the ACS estimates in 52577, 23.1% are under 18 and 21.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (90.2%).
- Under 1823.1%
- 18 to 6455.8%
- 65 and older21.0%
- White, not Hispanic90.2%
- Other or two or more4.4%
- Hispanic or Latino2.6%
- Black, not Hispanic1.4%
- Asian, not Hispanic1.3%
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 52577 earn?
Median household income is $66,084 (ACS 2020-2024), the 5th highest of the 7 ranked ZIP codes in Mahaska County. It is not measurably different from 2015-2019 ($64,656 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $66,084
- Income per person
- $36,047
- Below the poverty line
- 15.0%
- Unemployed (of the labor force)
- 4.4%
- Adults 25+ with a bachelor's degree
- 26.1%
- Adjusted gross income per tax return, 2022
- $70,8016,410 returns; wages 70% 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 52577?
FHFA's house price index for 52577, built from repeat sales and appraisals of the same homes, rose 79% from 2015 to 2025 and rose 54% from 2020 to 2025, and moved +4.7% in 2025.
- Median home value (owners' estimate)
- $163,300
- Median gross rent
- $825
- Homes owned by their occupants
- 66.1%
- Housing units
- 6,408
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 52577?
399 business establishments had a location in this ZIP code in 2023, 12 fewer than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade61
- Other services (except public administration)56
- Health care and social assistance39
- Accommodation and food services39
- Construction35
- Finance and insurance31
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 52577?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 52534 | Beacon | 321 | $58k | 1.0 mi |
| 52595 | University Park | 545 | $67k | 2.7 mi |
| 52553 | Eddyville | 1,846 | $65k | 8.6 mi |
| 50143 | Leighton | 538 | $86k | 8.8 mi |
| 52543 | Cedar | 541 | $84k | 9.2 mi |
| 50207 | New Sharon | 2,325 | $76k | 11.0 mi |
| 52561 | Fremont | 1,112 | $76k | 11.5 mi |
| 52586 | Rose Hill | 600 | $53k | 11.5 mi |
| 50256 | Tracy | 643 | $83k | 12.7 mi |
| 50044 | Bussey | 901 | $75k | 13.5 mi |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.