Postal Codes

50523 ZIP Code

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ZIP code 50523 covers Callender, Iowa, with a population of about 614 and a median household income of $83,333.

Population
61415 per square mile
Median age
43.14.4 points above the US average
Median household income
$83,3331.1× the Iowa median
Poverty rate
4.3%8.1 points below the US average
Typical home value
$166,938up 24.7% in five years
Median rent
$40457% below the Iowa median
Degree or higher
13.6%21.4 points below the US average
Homeownership
82.5%17.5 points above the US average
Time zone
Central UTC-06:00observes daylight saving time
Businesses
13

Where 50523 is

Callender, 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

Population614
Median age43.1
Family households69.2%
Born outside the US0%
Speaks a language other than English at home0.7%
White (non-Hispanic)94.8%
Black (non-Hispanic)0%
Asian (non-Hispanic)0%
Hispanic or Latino1.1%
Veterans7.5%
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$83,333
Income per person$36,324
Poverty rate4.3%
Households on SNAP or cash assistance7.1%

Household income distribution

Under $10k2.5%
$10–15k0.4%
$15–20k8.3%
$20–25k1.2%
$25–30k7.5%
$30–35k3.8%
$35–40k4.6%
$40–45k1.7%
$45–50k0.8%
$50–60k9.2%
$60–75k5.0%
$75–100k7.9%
$100–125k20.8%
$125–150k8.8%
$150–200k12.5%
$200k or more5.0%

Income as declared to the IRS

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

Tax returns filed300
Mean adjusted gross income$65,043
Returns declaring $200,000 or more0%
Returns, under $25k23.3%
Returns, $25k–$50k23.3%
Returns, $50k–$75k16.7%
Returns, $75k–$100k13.3%
Returns, $100k–$200k23.3%
Returns, $200k or more0.0%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$137,900
Median gross rent$404
Rent as a share of household income13.8%
Owner-occupied82.5%
Vacant homes7%
Median year built1944

What the homes are

Detached house92.2%
Attached house0.8%
2 to 4 units6.2%
5 to 19 units0.8%
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$166,938as of 2026-07
Typical home value, 1 yearup 5.6%
Typical home value, 5 yearsup 24.7%
Typical home value since 2000
201720212026$166,938$102,903

$102,903 in 2017 to $166,938 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate0.3%
Bachelor's degree or higher13.6%
High school diploma or higher94.2%
Works from home0.3%
Drives to work alone94.6%
Takes public transport0%
Commutes 45 minutes or more8.6%
Health

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

Obesity41.4% 8 pts above the national average of 33.4%
Diagnosed diabetes11.7% same as the national average of 12%
Currently smokes16.1% 2.9 pts above the national average of 13.2%
High blood pressure37.8% 3.7 pts above the national average of 34.1%
Fair or poor general health17.5% 2.8 pts below the national average of 20.3%
No health insurance (18–64)6.2% 5.1 pts below the national average of 11.3%
Depression20.3% 1.6 pts below the national average of 21.9%
No leisure-time physical activity26% 0.6 pts above the national average of 25.4%
Arthritis29% 3.9 pts above the national average of 25.1%
Binge drinking21.1% 5.1 pts above the national average of 16%
Taking blood pressure medication78.6% 3.9 pts above the national average of 74.7%
Cancer (non-skin)9.6% 1.9 pts above the national average of 7.7%
Current asthma9.9% 0.5 pts below the national average of 10.4%
Coronary heart disease7.2% 1 pts above the national average of 6.2%
Routine check-up in past year78.7% 2 pts above the national average of 76.7%
Cholesterol screening85.9% same as the national average of 85.9%
Cognitive disability13.2% 1.6 pts below the national average of 14.8%
Colorectal screening65.7% 1.4 pts above the national average of 64.3%
COPD7.3% 0.7 pts above the national average of 6.6%
Visited a dentist68.5% 7.2 pts above the national average of 61.3%
Any disability27.5% 3.2 pts below the national average of 30.7%
Lacks emotional support23% 1.8 pts below the national average of 24.8%
Food insecurity10.7% 6.4 pts below the national average of 17.1%
Received food stamps8.7% 5.6 pts below the national average of 14.3%
Hearing disability8.2% 1.5 pts above the national average of 6.7%
High cholesterol36.2% same as the national average of 36.2%
Housing insecurity8.4% 5.4 pts below the national average of 13.8%
Independent living disability7.3% 1.1 pts below the national average of 8.4%
Lacks transport6.1% 3.1 pts below the national average of 9.2%
Loneliness32.2% 2.2 pts below the national average of 34.4%
Mammography use78% 2.1 pts above the national average of 75.9%
Poor mental health (14+ days)16.1% 0.7 pts below the national average of 16.8%
Mobility disability13.1% 0.9 pts below the national average of 14%
Poor physical health (14+ days)13% 0.5 pts below the national average of 13.5%
Self-care disability3.5% 0.5 pts below the national average of 4%
Utility shut-off threat6% 2.8 pts below the national average of 8.8%
Sleeps under 7 hours36.3% same as the national average of 36.4%
Stroke3.5% same as the national average of 3.4%
All natural teeth lost12.6% same as the national average of 13%
Vision disability4.2% 1.4 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments13
People employed19
Annual payroll$1,101,000
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 76.4% of US census tracts
FEMA ratingRelatively Moderate
Expected annual loss90.9 out of 100
Community resilience75.3 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.

Drought99.2Relatively High at its worst in this ZIP code
Hail98Relatively High at its worst in this ZIP code
Tornado96.5Very High at its worst in this ZIP code
Strong wind90.4Relatively High at its worst in this ZIP code
Winter weather87.8Relatively High at its worst in this ZIP code
Ice storm62.6Relatively Low at its worst in this ZIP code
Cold wave62.5Relatively Moderate at its worst in this ZIP code
Landslide59.9Very Low at its worst in this ZIP code
Wildfire50.6Very Low at its worst in this ZIP code
River flooding39.9Relatively Low at its worst in this ZIP code
Lightning36.6Relatively Low at its worst in this ZIP code
Hurricane29.8Very Low at its worst in this ZIP code
Earthquake12.4Very Low at its worst in this ZIP code
Heat wave3.1Very 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$83,333$73,147$78,538
Income per person$36,324$39,728$43,289
Poverty rate4.3%11%12.4%
Median home value$137,900$195,900$303,400
Median gross rent$404$949$1,348
Homeownership82.5%71.5%65%
Bachelor's degree or higher13.6%30.9%35%
Unemployment rate0.3%3.6%5.2%
Works from home0.3%10.4%13.5%
Born outside the US0%5.7%13.9%
Median age43.138.638.7
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 stationFT DODGE 5NNW, IA US26.9 km away
Rain in a year35 in
Snow in a year39 in

Average high and low by month

January25.5°F / 7.4°F0.95 in rain, 8.6 in snow
February30.5°F / 11.5°F1.23 in rain, 11.8 in snow
March43.9°F / 23.8°F1.96 in rain, 5.6 in snow
April58.8°F / 34.8°F3.72 in rain, 1.5 in snow
May69.9°F / 47.5°F4.57 in rain, 0.4 in snow
June79.7°F / 58.4°F5.53 in rain
July82.7°F / 62°F4.2 in rain
August80.3°F / 59.5°F4.26 in rain
September74.2°F / 50.5°F2.81 in rain
October61.3°F / 37.7°F2.55 in rain, 0.4 in snow
November45.1°F / 25.1°F1.85 in rain, 2.8 in snow
December31.3°F / 14.1°F1.46 in rain, 7.9 in snow
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%.

Southeast Valley Community School District100% 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 vulnerability14more vulnerable than 14% of US census tracts
Socioeconomic status17more vulnerable than 17% of US census tracts
Household characteristics30more vulnerable than 30% of US census tracts
Racial and ethnic minority status9more vulnerable than 9% of US census tracts
Housing type and transport22more vulnerable than 22% of US census tracts
Walkability4.8 out of 20Least walkable
Nearby ZIP codes

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

50543 Gowrie, IA8.2 km away
50566 Moorland, IA9.9 km away
50544 Harcourt, IA12.8 km away
50569 Otho, IA13.2 km away
50586 Somers, IA13.5 km away
50521 Burnside, IA13.8 km away
50538 Farnhamville, IA14.6 km away
50552 Knierim, IA18.6 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.

Webster County100% of this ZIP code's land area
Time zoneCentral (UTC-06:00 standard)
Daylight saving timeObserved
Land area42.05 sq mi
Population density15 people per sq mi
Latitude, longitude42.3494, -94.2820

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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