City · Iowa
Lamoni, Iowa
Lamoni, city, in Decatur County, Iowa. Lamoni had 2,074 residents on July 1, 2025 by the Census Bureau's estimate, down 0.5% from the Bureau's April 2020 estimates base of 2,085; the 2020 Census counted 1,969 on the place as it was defined then and the ACS 2020-2024 5-year estimates put it at 2,207 (±231). GEOID 1942960.
Residents, July 2025 estimate
2,074
Census Bureau estimate (no margin published)
2020 Census count: 1,969 · ACS 2020-2024: 2,207 ±231
Median household income
$54,554
±$7,927 (90% margin)
Iowa: $75,059
Median home value
$113,400
±$12,631 (90% margin)
Iowa: $208,000
Median gross rent
$644
±$117 (90% margin)
Iowa: $972
Where is Lamoni and what county is it in?
Lamoni is a city in Decatur County, Iowa. It covers 4.0 square miles of land, 498 residents per square mile in 2020.
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Lamoni, and is it growing?
The Census Bureau estimates that 2,074 people lived in Lamoni on July 1, 2025, down 0.5% since 2020, while Iowa grew 1.5%. The Census Bureau's yearly estimates start from its own April 2020 base for Lamoni, 2,085, which differs from the 2020 Census count of 1,969: the estimates follow the place as the estimates program defines it today (its present boundaries, and for a consolidated city-county the area the program assigns it), so the change since 2020 is measured from that base. The 2020-2024 American Community Survey, a five-year sample, puts the population at 2,207 (±231).
| Measure | Lamoni | Decatur County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 2,207 ±231 | 7,759 | −347 |
| Households | 751 ±103 | 3,055 | −166 |
| Average household size | 2.27 ±0.24 | 2.35 | no clear change |
| Housing units | 876 ±108 | 3,659 | −210 |
Lamoni's population since 2000
From 2,444 in 2000 to 2,074 in 2025: down 15.1%. The 2000, 2010 and 2020 figures are census counts, each for Lamoni 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 Lamoni?
The median resident of Lamoni is 25.5 years old; 16.9% are under 18 and 19.1% are 65 or older. The largest group is non-Hispanic white residents at 79.8%, then non-Hispanic residents of two or more races at 8.0%. 6.0% of residents were born outside the United States.
| Measure | Lamoni | Decatur County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 25.5 ±3.4 | 36.1 | no clear change |
| Under 18 years | 16.9% ±3.8 pts | 22.2% | – |
| 65 years and over | 19.1% ±3.1 pts | 21.1% | – |
| Male | 48.3% ±4.4 pts | 49.6% | – |
| Hispanic or Latino (any race) | 3.5% ±1.8 pts | 3.5% | −3.2 pts |
| White alone, not Hispanic | 79.8% ±2.8 pts | 90.2% | no clear change |
| Black or African American alone, not Hispanic | 4.4% ±1.9 pts | 1.3% | no clear change |
| Asian alone, not Hispanic | 2.5% ±1.4 pts | 0.7% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.7% ±0.7 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 8.0% ±2.5 pts | 3.4% | – |
| Some other race alone, not Hispanic | 0.9% ±1.1 pts | 0.6% | – |
| Born outside the United States | 6.0% ±2.4 pts | 1.9% | no clear change |
| Speak a language other than English at home (age 5+) | 6.5% ±2.2 pts | 5.2% | – |
| Civilian veterans (age 18+) | 5.6% ±2.0 pts | 6.0% | – |
| With a disability | 15.4% ±4.0 pts | 15.7% | – |
| No health insurance coverage | 3.1% ±1.7 pts | 7.6% | no clear change |
| High school graduate or higher (age 25+) | 91.5% ±3.9 pts | 89.7% | – |
| Bachelor's degree or higher (age 25+) | 41.9% ±5.7 pts | 23.5% | no clear change |
| Graduate or professional degree (age 25+) | 28.1% ±6.3 pts | 11.2% | – |
| Lived in the same house a year earlier | 73.4% ±5.7 pts | 83.3% | – |
| Moved from another state in the past year | 9.4% ±3.1 pts | 3.5% | – |
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 Lamoni earn?
Half of Lamoni's 751 households earn less than $54,554 a year (±$7,927), against $59,044 in Decatur County and $75,059 in Iowa. In 2015-2019 it was $45,995 in 2024 dollars; the margins of error cannot tell the two periods apart. 16.6% of residents live below the poverty line.
| Measure | Lamoni | Decatur County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $54,554 ±$7,927 | $59,044 | no clear change |
| Mean household income | $69,933 ±$13,315 | $74,390 | – |
| Per capita income | $26,948 ±$7,826 | $30,020 | no clear change |
| People below the poverty line | 16.6% ±5.8 pts | 14.6% | no clear change |
| Children under 18 below the poverty line | 23.5% ±14.1 pts | 20.1% | no clear change |
| Households receiving SNAP | 13.2% ±4.4 pts | 9.7% | – |
| Households with a computer | 97.1% ±2.8 pts | 91.5% | – |
| Households with a broadband subscription | 86.3% ±5.8 pts | 83.8% | – |
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 Lamoni?
Owners occupy 57.3% of Lamoni's occupied homes and renters 42.7%. The median owner-occupied home is valued at $113,400 by its owner (±$12,631). The median renter pays $644 a month including utilities, and 31.0% of renters pay 35% or more of their income on rent.
| Measure | Lamoni | Decatur County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $113,400 ±$12,631 | $113,900 | no clear change |
| Median gross rent | $644 ±$117 | $611 | no clear change |
| Renters paying 35% or more of income on rent | 31.0% ±12.7 pts | 24.8% | no clear change |
| Median monthly owner costs, with a mortgage | $1,034 ±$244 | $1,279 | – |
| Owner-occupied homes | 57.3% ±8.2 pts | 69.7% | no clear change |
| Renter-occupied homes | 42.7% ±8.2 pts | 30.3% | – |
| Housing units | 876 ±108 | 3,659 | −210 |
| Homeowner vacancy rate | 1.4% ±2.3 pts | 2.2% | – |
| Rental vacancy rate | 9.1% ±7.6 pts | 5.0% | – |
| Single-family detached homes | 62.6% ±7.5 pts | 76.7% | – |
| Mobile homes | 1.6% ±1.2 pts | 7.5% | – |
| Built 2020 or later | 0.7% ±0.9 pts | 0.9% | – |
| Built 2010 to 2019 | 1.9% ±1.8 pts | 4.3% | – |
| Built 1939 or earlier | 26.6% ±7.2 pts | 27.5% | – |
| Households with no vehicle | 9.2% ±4.8 pts | 7.5% | – |
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 Lamoni building?
Builders took permits for 1 new housing units in Lamoni in 2025 (1 in single-family houses), 0.5 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 Lamoni work and get to work?
65.8% of Lamoni's workers drive alone. The average trip to work takes 12.9 minutes.
| Measure | Lamoni | Decatur County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 61.5% ±4.7 pts | 62.4% | – |
| Unemployment rate | 3.7% ±2.5 pts | 1.9% | – |
| Drove alone to work | 65.8% ±6.8 pts | 75.0% | – |
| Carpooled | 8.9% ±3.9 pts | 10.2% | – |
| Public transportation | 0.0% ±2.2 pts | 0.0% | – |
| Walked | 17.5% ±6.1 pts | 7.8% | – |
| Worked from home | 7.0% ±5.7 pts | 6.0% | – |
| Mean travel time to work | 12.9 min ±2.4 | 22.5 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 Lamoni?
No census tract lies mostly in Lamoni; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9602Decatur County | 3,540 | $52,734 |
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 Lamoni) · Census block assignment files
How does Lamoni compare with other places in Iowa?
By the Census Bureau's July 2025 estimates, Lamoni is the 7,560th-most populous of the 19,476 U.S. incorporated places that have one and the 157th-most populous of 939 in Iowa.
Lamoni ranks 252nd of 279 places in Iowa with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 157th | 939 |
| Growth 2020-2025 (PEP) | 136th | 275 |
| Residents per square mile | 265th | 279 |
| Median household income | 252nd | 279 |
| Per capita income | 273rd | 279 |
| Median home value | 249th | 279 |
| Median gross rent | 251st | 266 |
| Poverty rate | 34th | 232 |
| Bachelor's degree or higher | 40th | 279 |
| Median age | 275th | 279 |
| Owner-occupied share | 270th | 279 |
| Travel time to work | 265th | 279 |
Lamoni's figures with every place in Iowa (CSV)
Every place in Iowa, sortable · Compare Lamoni 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 Lamoni?
11 of the 57 figures for Lamoni 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 Lamoni 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 Lamoni.