City · Iowa
Garnavillo, Iowa
Garnavillo, city, in Clayton County, Iowa. Garnavillo had 739 residents on July 1, 2025 by the Census Bureau's estimate, down 2.1% since 2020; the 2020 Census counted 763 and the ACS 2020-2024 5-year estimates put it at 816 (±183). GEOID 1929910.
Residents, July 2025 estimate
739
Census Bureau estimate (no margin published)
2020 Census count: 763 · ACS 2020-2024: 816 ±183
Median household income
$75,357
±$14,978 (90% margin)
Iowa: $75,059
Median home value
$123,100
±$30,084 (90% margin)
Iowa: $208,000
Median gross rent
$922
±$84 (90% margin)
Iowa: $972
Where is Garnavillo and what county is it in?
Garnavillo is a city in Clayton County, Iowa. It covers 0.9 square miles of land, 808 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 Garnavillo, and is it growing?
The Census Bureau estimates that 739 people lived in Garnavillo on July 1, 2025, down 2.1% since 2020, while Iowa grew 1.5%. The 2020 Census counted 763 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 816 (±183).
| Measure | Garnavillo | Clayton County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 816 ±183 | 17,013 | no clear change |
| Households | 354 ±72 | 7,509 | no clear change |
| Average household size | 2.21 ±0.24 | 2.23 | no clear change |
| Housing units | 371 ±72 | 8,796 | no clear change |
Garnavillo's population since 2000
From 754 in 2000 to 739 in 2025: down 2.0%. The 2000, 2010 and 2020 figures are census counts, each for Garnavillo 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 Garnavillo?
The median resident of Garnavillo is 43.7 years old; 25.5% are under 18 and 27.2% are 65 or older. The largest group is non-Hispanic white residents at 96.3%, then Hispanic or Latino residents (of any race) at 2.0%.
| Measure | Garnavillo | Clayton County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 43.7 ±13.6 | 46.4 | no clear change |
| Under 18 years | 25.5% ±7.2 pts | 21.6% | – |
| 65 years and over | 27.2% ±7.7 pts | 25.0% | – |
| Male | 52.6% ±5.6 pts | 50.3% | – |
| Hispanic or Latino (any race) | 2.0% ±2.6 pts | 2.3% | – |
| White alone, not Hispanic | 96.3% ±4.0 pts | 95.0% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±3.0 pts | 0.6% | – |
| Asian alone, not Hispanic | 0.0% ±3.0 pts | 0.3% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±3.0 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±3.0 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.3% ±2.1 pts | 1.7% | – |
| Some other race alone, not Hispanic | 0.4% ±0.5 pts | 0.0% | – |
| Born outside the United States | 1.1% ±1.7 pts | 2.3% | – |
| Speak a language other than English at home (age 5+) | 3.5% ±2.9 pts | 5.7% | – |
| Civilian veterans (age 18+) | 9.0% ±3.6 pts | 8.2% | – |
| With a disability | 14.6% ±4.7 pts | 14.7% | – |
| No health insurance coverage | 7.0% ±3.3 pts | 8.4% | – |
| High school graduate or higher (age 25+) | 95.2% ±2.4 pts | 92.6% | – |
| Bachelor's degree or higher (age 25+) | 15.2% ±6.0 pts | 14.5% | no clear change |
| Graduate or professional degree (age 25+) | 3.5% ±2.1 pts | 3.9% | – |
| Lived in the same house a year earlier | 88.9% ±7.8 pts | 90.0% | – |
| Moved from another state in the past year | 0.9% ±1.0 pts | 1.4% | – |
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 Garnavillo earn?
Half of Garnavillo's 354 households earn less than $75,357 a year (±$14,978), against $67,242 in Clayton County and $75,059 in Iowa. In 2015-2019 it was $65,590 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Garnavillo | Clayton County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $75,357 ±$14,978 | $67,242 | no clear change |
| Mean household income | $88,066 ±$14,073 | $86,441 | – |
| Per capita income | $37,132 ±$6,695 | $38,594 | no clear change |
| People below the poverty line | 12.3% ±8.5 pts | 10.9% | – |
| Children under 18 below the poverty line | 24.0% ±22.8 pts | 12.4% | – |
| Households receiving SNAP | 11.0% ±7.5 pts | 6.7% | – |
| Households with a computer | 91.8% ±4.0 pts | 89.5% | – |
| Households with a broadband subscription | 86.7% ±5.7 pts | 84.4% | – |
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 Garnavillo?
Owners occupy 84.5% of Garnavillo's occupied homes and renters 15.5%. The median owner-occupied home is valued at $123,100 by its owner (±$30,084). The median renter pays $922 a month including utilities, and 54.5% of renters pay 35% or more of their income on rent.
| Measure | Garnavillo | Clayton County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $123,100 ±$30,084 | $168,500 | no clear change |
| Median gross rent | $922 ±$84 | $790 | +$160 |
| Renters paying 35% or more of income on rent | 54.5% ±25.2 pts | 36.3% | no clear change |
| Median monthly owner costs, with a mortgage | $1,182 ±$153 | $1,354 | – |
| Owner-occupied homes | 84.5% ±7.0 pts | 78.0% | +10.3 pts |
| Renter-occupied homes | 15.5% ±7.0 pts | 22.0% | – |
| Housing units | 371 ±72 | 8,796 | no clear change |
| Homeowner vacancy rate | 0.0% ±8.0 pts | 0.8% | – |
| Rental vacancy rate | 0.0% ±34.6 pts | 2.9% | – |
| Single-family detached homes | 86.3% ±6.0 pts | 81.2% | – |
| Mobile homes | 5.4% ±4.5 pts | 4.5% | – |
| Built 2020 or later | 0.0% ±6.5 pts | 1.1% | – |
| Built 2010 to 2019 | 4.0% ±3.7 pts | 7.6% | – |
| Built 1939 or earlier | 33.7% ±10.6 pts | 36.6% | – |
| Households with no vehicle | 2.5% ±3.2 pts | 6.9% | – |
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 Garnavillo building?
Builders took permits for 1 new housing units in Garnavillo in 2025 (1 in single-family houses), 1.4 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 Garnavillo work and get to work?
80.4% of Garnavillo's workers drive alone. The average trip to work takes 19.3 minutes.
| Measure | Garnavillo | Clayton County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 62.7% ±7.1 pts | 61.7% | – |
| Unemployment rate | 1.6% ±1.5 pts | 2.5% | – |
| Drove alone to work | 80.4% ±11.1 pts | 76.4% | – |
| Carpooled | 2.7% ±2.7 pts | 7.5% | – |
| Public transportation | 0.0% ±6.5 pts | 0.0% | – |
| Walked | 5.1% ±3.5 pts | 4.1% | – |
| Worked from home | 11.8% ±10.0 pts | 8.3% | – |
| Mean travel time to work | 19.3 min ±5.3 | 23.1 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 Garnavillo?
No census tract lies mostly in Garnavillo; 2 tracts reach into it (2020 census blocks).
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 Garnavillo) · Census block assignment files
How does Garnavillo compare with other places in Iowa?
By the Census Bureau's July 2025 estimates, Garnavillo is the 11,572nd-most populous of the 19,476 U.S. incorporated places that have one and the 351st-most populous of 939 in Iowa.
Garnavillo 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 | 351st | 939 |
Garnavillo's figures with every place in Iowa (CSV)
Every place in Iowa, sortable · Compare Garnavillo 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 Garnavillo?
24 of the 57 figures for Garnavillo 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 Garnavillo 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 Garnavillo.