Postal Codes

50136 ZIP Code

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ZIP code 50136 covers Keswick, Iowa, with a population of about 411 and a median household income of $66,125.

Population
41110 per square mile
Median age
48.19.4 points above the US average
Median household income
$66,12510% below the Iowa median
Poverty rate
5.8%6.6 points below the US average
Typical home value
$129,514
Median rent
$975about the Iowa median
Degree or higher
16.1%18.9 points below the US average
Homeownership
81.5%16.5 points above the US average
Time zone
Central UTC-06:00observes daylight saving time
Businesses
11

Where 50136 is

Keswick, Iowa — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population411
Median age48.1
Family households70.7%
Born outside the US2.2%
Speaks a language other than English at home5.6%
White (non-Hispanic)97.6%
Black (non-Hispanic)0%
Asian (non-Hispanic)0%
Hispanic or Latino2.2%
Veterans7.9%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$66,125
Income per person$35,031
Poverty rate5.8%
Households on SNAP or cash assistance5.7%

Household income distribution

Under $10k1.9%
$10–15k0.6%
$15–20k2.5%
$20–25k3.8%
$25–30k0.6%
$30–35k5.1%
$35–40k6.4%
$40–45k4.5%
$45–50k0.0%
$50–60k16.6%
$60–75k12.7%
$75–100k7.0%
$100–125k15.3%
$125–150k8.9%
$150–200k13.4%
$200k or more0.6%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed180
Mean adjusted gross income$60,756
Returns declaring $200,000 or more0%
Returns, under $25k22.2%
Returns, $25k–$50k22.2%
Returns, $50k–$75k22.2%
Returns, $75k–$100k16.7%
Returns, $100k–$200k16.7%
Returns, $200k or more0.0%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$105,000
Median gross rent$975
Rent as a share of household income21.7%
Owner-occupied81.5%
Vacant homes19.5%
Median year built1938

What the homes are

Detached house88.2%
Attached house9.2%
2 to 4 units1%
Mobile home1.5%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$129,514as of 2026-07
Typical home value, 1 yeardown 0.7%
Typical home value since 2000
202220242026$145,675$129,514

$143,045 in 2022 to $129,514 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate4.9%
Bachelor's degree or higher16.1%
High school diploma or higher98.7%
Works from home3.2%
Drives to work alone91.9%
Takes public transport0%
Commutes 45 minutes or more21.7%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity43% 9.6 pts above the national average of 33.4%
Diagnosed diabetes15.4% 3.4 pts above the national average of 12%
Currently smokes19.3% 6.1 pts above the national average of 13.2%
High blood pressure43.1% 9 pts above the national average of 34.1%
Fair or poor general health22.5% 2.2 pts above the national average of 20.3%
No health insurance (18–64)7.5% 3.8 pts below the national average of 11.3%
Depression21.1% 0.8 pts below the national average of 21.9%
No leisure-time physical activity31.1% 5.7 pts above the national average of 25.4%
Arthritis33.5% 8.4 pts above the national average of 25.1%
Binge drinking17.6% 1.6 pts above the national average of 16%
Taking blood pressure medication82% 7.3 pts above the national average of 74.7%
Cancer (non-skin)10.8% 3.1 pts above the national average of 7.7%
Current asthma10.2% same as the national average of 10.4%
Coronary heart disease9.7% 3.5 pts above the national average of 6.2%
Routine check-up in past year79% 2.3 pts above the national average of 76.7%
Cholesterol screening85.3% 0.6 pts below the national average of 85.9%
Cognitive disability15% same as the national average of 14.8%
Colorectal screening66% 1.7 pts above the national average of 64.3%
COPD10.3% 3.7 pts above the national average of 6.6%
Visited a dentist62% 0.7 pts above the national average of 61.3%
Any disability34.1% 3.4 pts above the national average of 30.7%
Lacks emotional support24% 0.8 pts below the national average of 24.8%
Food insecurity14% 3.1 pts below the national average of 17.1%
Received food stamps13.2% 1.1 pts below the national average of 14.3%
Hearing disability10.4% 3.7 pts above the national average of 6.7%
High cholesterol39.9% 3.7 pts above the national average of 36.2%
Housing insecurity9.8% 4 pts below the national average of 13.8%
Independent living disability9.2% 0.8 pts above the national average of 8.4%
Lacks transport7.4% 1.8 pts below the national average of 9.2%
Loneliness32.1% 2.3 pts below the national average of 34.4%
Mammography use75% 0.9 pts below the national average of 75.9%
Poor mental health (14+ days)16.9% same as the national average of 16.8%
Mobility disability17.6% 3.6 pts above the national average of 14%
Poor physical health (14+ days)15.8% 2.3 pts above the national average of 13.5%
Self-care disability4.6% 0.6 pts above the national average of 4%
Utility shut-off threat7.1% 1.7 pts below the national average of 8.8%
Sleeps under 7 hours32.8% 3.6 pts below the national average of 36.4%
Stroke4.7% 1.3 pts above the national average of 3.4%
All natural teeth lost14.5% 1.5 pts above the national average of 13%
Vision disability5.5% same as the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments11
People employed39
Annual payroll$1,923,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 81.3% of US census tracts
FEMA ratingRelatively Moderate
Expected annual loss75.4 out of 100
Community resilience74.6 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Strong wind99.1Very High at its worst in this ZIP code
Drought97.1Relatively Moderate at its worst in this ZIP code
Hail96Relatively High at its worst in this ZIP code
Landslide91.6Relatively Low at its worst in this ZIP code
Tornado88.5Very High at its worst in this ZIP code
Heat wave85.5Relatively High at its worst in this ZIP code
Wildfire85.2Relatively Moderate at its worst in this ZIP code
River flooding84.8Relatively High at its worst in this ZIP code
Winter weather83.2Relatively High at its worst in this ZIP code
Lightning82.5Relatively High at its worst in this ZIP code
Cold wave72.4Relatively Moderate at its worst in this ZIP code
Ice storm69.1Relatively Moderate at its worst in this ZIP code
Hurricane33.3Very Low at its worst in this ZIP code
Earthquake27.3Very Low at its worst in this ZIP code
Compared with Iowa and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPIowaUnited States
Median household income$66,125$73,147$78,538
Income per person$35,031$39,728$43,289
Poverty rate5.8%11%12.4%
Median home value$105,000$195,900$303,400
Median gross rent$975$949$1,348
Homeownership81.5%71.5%65%
Bachelor's degree or higher16.1%30.9%35%
Unemployment rate4.9%3.6%5.2%
Works from home3.2%10.4%13.5%
Born outside the US2.2%5.7%13.9%
Median age48.138.638.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationSIGOURNEY, IA US13.8 km away
Rain in a year37 in

Average high and low by month

January29.8°F / 11.5°F1.18 in rain
February34.6°F / 15.1°F1.47 in rain
March47.6°F / 26.3°F2.34 in rain
April60.7°F / 37.2°F3.7 in rain
May71°F / 49.1°F4.95 in rain
June80.6°F / 59.1°F5.11 in rain
July84.6°F / 62.7°F3.93 in rain
August82.8°F / 60.4°F4.76 in rain
September76.4°F / 51.7°F3.47 in rain
October63.4°F / 39.8°F2.78 in rain
November48.2°F / 27.7°F2.18 in rain
December35.3°F / 17.7°F1.54 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarketNone of this ZIP code
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

Tri-County Community School District99.1% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability37more vulnerable than 37% of US census tracts
Socioeconomic status48more vulnerable than 48% of US census tracts
Household characteristics75more vulnerable than 75% of US census tracts
Racial and ethnic minority status12more vulnerable than 12% of US census tracts
Housing type and transport18more vulnerable than 18% of US census tracts
Walkability4 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

52355 Webster, IA5.9 km away
50255 Thornburg, IA8.1 km away
50268 What Cheer, IA12.1 km away
50104 Gibson, IA12.6 km away
52308 Millersburg, IA14.1 km away
52335 South English, IA14.3 km away
52316 North English, IA14.3 km away
52562 Hayesville, IA14.8 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Keokuk County94.4% of this ZIP code's land area
Iowa County5.6% of this ZIP code's land area
Time zoneCentral (UTC-06:00 standard)
Daylight saving timeObserved
Land area39.82 sq mi
Water area0.01 sq mi
Population density10 people per sq mi
Latitude, longitude41.4613, -92.2395

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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