City · Iowa
Walnut, Iowa
Walnut, city, in Pottawattamie County, Iowa. Walnut had 715 residents on July 1, 2025 by the Census Bureau's estimate, down 3.8% since 2020; the 2020 Census counted 747 and the ACS 2020-2024 5-year estimates put it at 1,342 (±150). GEOID 1982065.
Residents, July 2025 estimate
715
Census Bureau estimate (no margin published)
2020 Census count: 747 · ACS 2020-2024: 1,342 ±150
Median household income
$62,500
±$19,865 (90% margin)
Iowa: $75,059
Median home value
$115,900
±$20,170 (90% margin)
Iowa: $208,000
Median gross rent
$874
±$74 (90% margin)
Iowa: $972
Where is Walnut and what county is it in?
Walnut is a city in Pottawattamie County, Iowa. It covers 2.2 square miles of land, 340 residents per square mile in 2020.
Walnut is in the Omaha, NE-IA metropolitan statistical area, which takes in 8 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Walnut, and is it growing?
The Census Bureau estimates that 715 people lived in Walnut on July 1, 2025, down 3.8% since 2020, while Iowa grew 1.5%. The 2020 Census counted 747 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 1,342 (±150).
| Measure | Walnut | Pottawattamie County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 1,342 ±150 | 93,424 | +578 |
| Households | 332 ±70 | 37,642 | no clear change |
| Average household size | 2.12 ±0.26 | 2.41 | no clear change |
| Housing units | 386 ±68 | 40,083 | no clear change |
Walnut's population since 2000
From 778 in 2000 to 715 in 2025: down 8.1%. The 2000, 2010 and 2020 figures are census counts, each for Walnut as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Walnut?
The median resident of Walnut is 67.3 years old; 13.0% are under 18 and 54.2% are 65 or older. The largest group is non-Hispanic white residents at 95.5%, then Hispanic or Latino residents (of any race) at 3.4%.
| Measure | Walnut | Pottawattamie County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 67.3 ±4.9 | 40.1 | +14.3 |
| Under 18 years | 13.0% ±3.8 pts | 22.9% | – |
| 65 years and over | 54.2% ±7.9 pts | 18.7% | – |
| Male | 40.9% ±7.0 pts | 49.5% | – |
| Hispanic or Latino (any race) | 3.4% ±2.7 pts | 9.1% | – |
| White alone, not Hispanic | 95.5% ±3.0 pts | 84.5% | no clear change |
| Black or African American alone, not Hispanic | 0.7% ±1.4 pts | 1.8% | – |
| Asian alone, not Hispanic | 0.0% ±1.8 pts | 0.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.8 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.8 pts | 0.2% | – |
| Two or more races, not Hispanic | 0.4% ±0.5 pts | 3.0% | – |
| Some other race alone, not Hispanic | 0.0% ±1.8 pts | 0.3% | – |
| Born outside the United States | 0.8% ±1.4 pts | 4.0% | – |
| Speak a language other than English at home (age 5+) | 1.1% ±1.7 pts | 6.9% | – |
| Civilian veterans (age 18+) | 14.7% ±5.3 pts | 8.4% | – |
| With a disability | 18.2% ±4.9 pts | 15.7% | – |
| No health insurance coverage | 6.4% ±4.1 pts | 5.0% | – |
| High school graduate or higher (age 25+) | 88.7% ±6.1 pts | 90.7% | – |
| Bachelor's degree or higher (age 25+) | 14.1% ±5.8 pts | 23.6% | no clear change |
| Graduate or professional degree (age 25+) | 4.6% ±4.1 pts | 7.9% | – |
| Lived in the same house a year earlier | 78.6% ±7.2 pts | 89.8% | – |
| Moved from another state in the past year | 2.0% ±2.2 pts | 2.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Walnut earn?
Half of Walnut's 332 households earn less than $62,500 a year (±$19,865), against $73,602 in Pottawattamie County and $75,059 in Iowa. In 2015-2019 it was $57,381 in 2024 dollars; the margins of error cannot tell the two periods apart. 12.4% of residents live below the poverty line.
| Measure | Walnut | Pottawattamie County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $62,500 ±$19,865 | $73,602 | no clear change |
| Mean household income | $79,044 ±$14,834 | $91,780 | – |
| Per capita income | $29,692 ±$5,692 | $37,477 | no clear change |
| People below the poverty line | 12.4% ±5.5 pts | 12.1% | no clear change |
| Children under 18 below the poverty line | 14.1% ±10.1 pts | 17.2% | – |
| Households receiving SNAP | 13.0% ±6.3 pts | 9.8% | – |
| Households with a computer | 86.4% ±6.4 pts | 93.4% | – |
| Households with a broadband subscription | 81.9% ±7.3 pts | 86.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Walnut?
Owners occupy 72.3% of Walnut's occupied homes and renters 27.7%. The median owner-occupied home is valued at $115,900 by its owner (±$20,170). The median renter pays $874 a month including utilities, and 38.8% of renters pay 35% or more of their income on rent.
| Measure | Walnut | Pottawattamie County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $115,900 ±$20,170 | $195,700 | no clear change |
| Median gross rent | $874 ±$74 | $1,018 | no clear change |
| Renters paying 35% or more of income on rent | 38.8% ±24.1 pts | 33.6% | no clear change |
| Median monthly owner costs, with a mortgage | $1,250 ±$137 | $1,495 | – |
| Owner-occupied homes | 72.3% ±10.1 pts | 69.9% | no clear change |
| Renter-occupied homes | 27.7% ±10.1 pts | 30.1% | – |
| Housing units | 386 ±68 | 40,083 | no clear change |
| Homeowner vacancy rate | 2.0% ±3.9 pts | 0.5% | – |
| Rental vacancy rate | 8.9% ±11.2 pts | 1.9% | – |
| Single-family detached homes | 82.9% ±6.4 pts | 75.9% | – |
| Mobile homes | 1.8% ±1.8 pts | 3.5% | – |
| Built 2020 or later | 0.0% ±6.3 pts | 0.7% | – |
| Built 2010 to 2019 | 0.5% ±0.7 pts | 5.6% | – |
| Built 1939 or earlier | 48.7% ±8.7 pts | 25.8% | – |
| Households with no vehicle | 8.7% ±6.2 pts | 6.3% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Walnut building?
Builders took permits for 2 new housing units in Walnut in 2025 (2 in single-family houses), 2.8 per 1,000 residents against 4.2 across Iowa.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Walnut work and get to work?
83.4% of Walnut's workers drive alone and 13.4% work from home. The average trip to work takes 27.4 minutes.
| Measure | Walnut | Pottawattamie County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 30.0% ±5.8 pts | 63.4% | – |
| Unemployment rate | 4.2% ±3.9 pts | 3.8% | – |
| Drove alone to work | 83.4% ±9.6 pts | 79.8% | – |
| Carpooled | 2.6% ±3.5 pts | 6.7% | – |
| Public transportation | 0.0% ±7.0 pts | 0.6% | – |
| Walked | 0.0% ±7.0 pts | 1.8% | – |
| Worked from home | 13.4% ±8.1 pts | 9.8% | – |
| Mean travel time to work | 27.4 min ±5.3 | 19.8 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Walnut?
No census tract lies mostly in Walnut; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 215.02Pottawattamie County | 3,320 | $73,097 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Walnut) · Census block assignment files
How does Walnut compare with other places in Iowa?
By the Census Bureau's July 2025 estimates, Walnut is the 11,730th-most populous of the 19,476 U.S. incorporated places that have one and the 358th-most populous of 939 in Iowa.
Walnut is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 358th | 939 |
Walnut's figures with every place in Iowa (CSV)
Every place in Iowa, sortable · Compare Walnut with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Walnut?
22 of the 57 figures for Walnut on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Walnut are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Walnut.