Residential delivery area · Iowa
ZIP Code 51446: Irwin, IA
ZIP code 51446 uses the postal name Irwin, Iowa and lies entirely in Shelby County (Census 2020 ZIP-county file). About 500 people live there (Census Bureau, ACS 2020-2024). Median household income is $62,750 (Census Bureau, ACS 2020-2024). By Census place, 2% of its land lies in Irwin; 98% is outside any Census place.
- ACS2020-24
- Census2020
- ZBP2023
- IRS2022
- Town
- Irwin · its only residential ZIP
- County
- Shelby County
- Census places
- Irwin
- House district
- IA-4 119th Congress
- State
- Iowa
- Time zone
- Central
- Land area
- 35.8 sq mi · 14 people per sq mi
Where is ZIP code 51446?
51446 centers on 41.777°, -95.193° and covers 35.8 square miles of land. It borders 6 ZIP codes: 51447, 51454, 51527, 51537, 51455, 50025.
The map draws ZIP code areas only. For the streets inside 51446, 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 51446 compare with the rest of Shelby County?
| Measure | 51446 | In Shelby County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 499 | 13th of 18 | 676th of 970 |
| Median household income | $63k | not ranked | not ranked |
| Median home value | $91k | not ranked | not ranked |
51446's income and home value are not ranked: it has fewer than 1,000 residents (499). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 21% of 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 51446?
The 2020 Census counted 520 people in 51446; the ACS, which samples households over 2020-2024, estimates 499. Between the 2010 and 2020 censuses its population grew 1.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 499±134 (90% margin)
- 2020 Census count
- 520+1.8% since 2010 (511)
- Households
- 231
- Median age
- 50.3
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 51446?
Of the 499 people the ACS estimates in 51446, 21.0% are under 18 and 26.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (94.0%).
- Under 1821.0%
- 18 to 6452.5%
- 65 and older26.5%
- White, not Hispanic94.0%
- Hispanic or Latino4.0%
- Other or two or more2.0%
- Black, not Hispanic0.0%
- Asian, not Hispanic0.0%
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 51446 earn?
Median household income is $62,750 (ACS 2020-2024). It is not measurably different from 2015-2019 ($83,435 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $62,750±$22,076
- Income per person
- $54,812
- Below the poverty line
- 10.9%
- Unemployed (of the labor force)
- 0.4%
- Adults 25+ with a bachelor's degree
- 30.0%
- Adjusted gross income per tax return, 2022
- $75,113230 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 51446?
- Median home value (owners' estimate)
- $91,400
- Median gross rent
- $705
- Homes owned by their occupants
- 87.4%
- Housing units
- 244
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001).
What businesses are in 51446?
18 business establishments had a location in this ZIP code in 2023, the same count as in 2018; the most are in wholesale trade (ZIP Code Business Patterns).
- Wholesale trade5
- Transportation and warehousing3
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 51446?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 51447 | Kirkman | 113 | $68k | 3.8 mi |
| 51454 | Manilla | 1,254 | $101k | 7.5 mi |
| 51527 | Defiance | 362 | $65k | 8.6 mi |
| 51537 | Harlan | 6,382 | $65k | 10.3 mi |
| 51455 | Manning | 2,279 | $77k | 11.4 mi |
| 50025 | Audubon | 3,148 | $52k | 14.1 mi |
| 51432 | Aspinwall | 45 | $61k | 9.6 mi (near) |
| 51543 | Kimballton | 478 | $72k | 10.3 mi (near) |
| 51578 | Westphalia | 116 | $77k | 11.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.