Residential delivery area · Iowa
ZIP Code 50136: Keswick, IA
ZIP code 50136 uses the postal name Keswick, Iowa and lies mostly in Keokuk County (94% of its land) with the rest in Iowa County (Census 2020 ZIP-county file). About 380 people live there (Census Bureau, ACS 2020-2024). Median household income is $75,625 (Census Bureau, ACS 2020-2024). By Census place, 1% of its land lies in Keswick; 99% is outside any Census place.
- ACS2020-24
- Census2020
- ZBP2023
- IRS2022
- Town
- Keswick · its only residential ZIP
- County
- Keokuk County (94%); Iowa County (6%)
- Census places
- Keswick
- House district
- IA-1 119th Congress
- State
- Iowa
- Time zone
- Central
- Land area
- 39.8 sq mi · 9 people per sq mi
Where is ZIP code 50136?
50136 centers on 41.470°, -92.293° and covers 39.8 square miles of land plus 0.0 of water. It borders 6 ZIP codes: 50255, 50104, 52355, 50268, 52222, 52591.
The map draws ZIP code areas only. For the streets inside 50136, 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 50136 compare with the rest of Keokuk County?
| Measure | 50136 | In Keokuk County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 376 | 14th of 20 | 750th of 970 |
| Median household income | $76k | not ranked | not ranked |
| Median home value | $98k | not ranked | not ranked |
50136's income and home value are not ranked: it has fewer than 1,000 residents (376). 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 16% 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 50136?
The 2020 Census counted 418 people in 50136; the ACS, which samples households over 2020-2024, estimates 376. Between the 2010 and 2020 censuses its population fell 6.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 376±81 (90% margin)
- 2020 Census count
- 418−6.1% since 2010 (445)
- Households
- 145
- Median age
- 50.8
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 50136?
Of the 376 people the ACS estimates in 50136, 21.0% are under 18 and 34.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (97.3%).
- Under 1821.0%
- 18 to 6444.1%
- 65 and older34.8%
- White, not Hispanic97.3%
- Hispanic or Latino2.4%
- Other or two or more0.3%
- 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 50136 earn?
Median household income is $75,625 (ACS 2020-2024). It is not measurably different from 2015-2019 ($67,102 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $75,625±$30,368
- Income per person
- $38,342
- Below the poverty line
- 6.1%
- Unemployed (of the labor force)
- 2.9%
- Adults 25+ with a bachelor's degree
- 17.6%
- Adjusted gross income per tax return, 2022
- $60,756180 returns; wages 66% 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 50136?
- Median home value (owners' estimate)
- $97,800
- Median gross rent
- $1,083
- Homes owned by their occupants
- 89.0%
- Housing units
- 173
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001).
What businesses are in 50136?
11 business establishments had a location in this ZIP code in 2023, 1 fewer than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction3
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 50136?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 50255 | Thornburg | 51 | $40k | 2.2 mi |
| 50104 | Gibson | 103 | $56k | 5.2 mi |
| 52355 | Webster | 283 | $64k | 5.3 mi |
| 50268 | What Cheer | 908 | $59k | 5.6 mi |
| 52222 | Deep River | 631 | $82k | 7.8 mi |
| 52591 | Sigourney | 2,721 | $62k | 11.8 mi |
| 50027 | Barnes City | 148 | $53k | 9.2 mi (near) |
| 52308 | Millersburg | 129 | $80k | 10.0 mi (near) |
| 52550 | Delta | 552 | $58k | 11.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.