City · Iowa
Danbury, Iowa
Danbury, city, in Woodbury County, Iowa. Danbury had 308 residents on July 1, 2025 by the Census Bureau's estimate, down 3.1% since 2020; the 2020 Census counted 320 and the ACS 2020-2024 5-year estimates put it at 283 (±78). GEOID 1918390.
Residents, July 2025 estimate
308
Census Bureau estimate (no margin published)
2020 Census count: 320 · ACS 2020-2024: 283 ±78
Median household income
$64,375
±$7,325 (90% margin)
Iowa: $75,059
Median home value
$85,600
±$15,693 (90% margin)
Iowa: $208,000
Median gross rent
$750
±$208 (90% margin)
Iowa: $972
Where is Danbury and what county is it in?
Danbury is a city in Woodbury County, Iowa. It covers 0.4 square miles of land, 790 residents per square mile in 2020.
Danbury is in the Sioux City, IA-NE-SD metropolitan statistical area, which takes in 3 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 Danbury, and is it growing?
The Census Bureau estimates that 308 people lived in Danbury on July 1, 2025, down 3.1% since 2020, while Iowa grew 1.5%. The 2020 Census counted 320 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 283 (±78).
| Measure | Danbury | Woodbury County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 283 ±78 | 106,247 | no clear change |
| Households | 135 ±31 | 40,699 | no clear change |
| Average household size | 2.10 ±0.31 | 2.54 | no clear change |
| Housing units | 158 ±35 | 43,388 | no clear change |
Danbury's population since 2000
From 384 in 2000 to 308 in 2025: down 19.8%. The 2000, 2010 and 2020 figures are census counts, each for Danbury 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 Danbury?
The median resident of Danbury is 49.5 years old; 23.3% are under 18 and 24.4% are 65 or older. The largest group is non-Hispanic white residents at 100.0%.
| Measure | Danbury | Woodbury County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 49.5 ±11.8 | 36.1 | no clear change |
| Under 18 years | 23.3% ±10.5 pts | 25.8% | – |
| 65 years and over | 24.4% ±7.8 pts | 15.9% | – |
| Male | 49.5% ±5.6 pts | 50.5% | – |
| Hispanic or Latino (any race) | 0.0% ±8.4 pts | 19.1% | – |
| White alone, not Hispanic | 100.0% ±8.4 pts | 67.1% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±8.4 pts | 4.9% | – |
| Asian alone, not Hispanic | 0.0% ±8.4 pts | 2.3% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±8.4 pts | 1.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±8.4 pts | 0.7% | – |
| Two or more races, not Hispanic | 0.0% ±8.4 pts | 4.3% | – |
| Some other race alone, not Hispanic | 0.0% ±8.4 pts | 0.2% | – |
| Born outside the United States | 0.0% ±8.4 pts | 10.6% | – |
| Speak a language other than English at home (age 5+) | 2.6% ±2.7 pts | 18.5% | – |
| Civilian veterans (age 18+) | 3.7% ±3.0 pts | 5.7% | – |
| With a disability | 15.2% ±7.8 pts | 13.5% | – |
| No health insurance coverage | 3.9% ±3.0 pts | 7.3% | – |
| High school graduate or higher (age 25+) | 90.4% ±6.6 pts | 87.6% | – |
| Bachelor's degree or higher (age 25+) | 17.8% ±9.1 pts | 24.3% | no clear change |
| Graduate or professional degree (age 25+) | 1.0% ±1.6 pts | 8.4% | – |
| Lived in the same house a year earlier | 97.9% ±2.3 pts | 91.4% | – |
| Moved from another state in the past year | 0.4% ±0.8 pts | 2.3% | – |
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 Danbury earn?
Half of Danbury's 135 households earn less than $64,375 a year (±$7,325), against $73,658 in Woodbury County and $75,059 in Iowa. In 2015-2019 it was $65,509 in 2024 dollars; the margins of error cannot tell the two periods apart. 11.7% of residents live below the poverty line.
| Measure | Danbury | Woodbury County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $64,375 ±$7,325 | $73,658 | no clear change |
| Mean household income | $75,199 ±$12,485 | $90,682 | – |
| Per capita income | $34,955 ±$4,607 | $35,564 | no clear change |
| People below the poverty line | 11.7% ±6.2 pts | 14.0% | – |
| Children under 18 below the poverty line | 4.5% ±7.9 pts | 18.0% | – |
| Households receiving SNAP | 13.3% ±6.9 pts | 12.6% | – |
| Households with a computer | 91.9% ±5.2 pts | 94.0% | – |
| Households with a broadband subscription | 85.9% ±8.4 pts | 87.3% | – |
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 Danbury?
Owners occupy 80.0% of Danbury's occupied homes and renters 20.0%. The median owner-occupied home is valued at $85,600 by its owner (±$15,693). The median renter pays $750 a month including utilities.
| Measure | Danbury | Woodbury County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $85,600 ±$15,693 | $183,200 | no clear change |
| Median gross rent | $750 ±$208 | $981 | no clear change |
| Renters paying 35% or more of income on rent | 21.7% ±21.3 pts | 36.4% | – |
| Median monthly owner costs, with a mortgage | $1,056 ±$178 | $1,428 | – |
| Owner-occupied homes | 80.0% ±10.2 pts | 68.2% | no clear change |
| Renter-occupied homes | 20.0% ±10.2 pts | 31.8% | – |
| Housing units | 158 ±35 | 43,388 | no clear change |
| Homeowner vacancy rate | 0.0% ±20.5 pts | 1.0% | – |
| Rental vacancy rate | 15.6% ±24.2 pts | 5.1% | – |
| Single-family detached homes | 89.2% ±7.9 pts | 72.2% | – |
| Mobile homes | 0.0% ±14.6 pts | 3.5% | – |
| Built 2020 or later | 0.0% ±14.6 pts | 1.2% | – |
| Built 2010 to 2019 | 2.5% ±3.4 pts | 5.1% | – |
| Built 1939 or earlier | 43.7% ±12.0 pts | 30.7% | – |
| Households with no vehicle | 0.0% ±16.8 pts | 6.1% | – |
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 Danbury building?
Builders took permits for 1 new housing units in Danbury in 2025 (1 in single-family houses), 3.2 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 Danbury work and get to work?
85.4% of Danbury's workers drive alone. The average trip to work takes 15.2 minutes.
| Measure | Danbury | Woodbury County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 61.3% ±8.5 pts | 67.2% | – |
| Unemployment rate | 0.0% ±16.7 pts | 4.1% | – |
| Drove alone to work | 85.4% ±8.2 pts | 79.5% | – |
| Carpooled | 6.9% ±5.5 pts | 11.2% | – |
| Public transportation | 0.0% ±17.4 pts | 1.1% | – |
| Walked | 1.5% ±2.2 pts | 1.9% | – |
| Worked from home | 5.4% ±5.0 pts | 5.6% | – |
| Mean travel time to work | 15.2 min ±3.1 | 18.1 min | −5.8 min |
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 Danbury?
No census tract lies mostly in Danbury; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 31Woodbury County | 3,506 | $66,193 |
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 Danbury) · Census block assignment files
How does Danbury compare with other places in Iowa?
By the Census Bureau's July 2025 estimates, Danbury is the 15,066th-most populous of the 19,476 U.S. incorporated places that have one and the 555th-most populous of 939 in Iowa.
Danbury 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 | 555th | 939 |
Danbury's figures with every place in Iowa (CSV)
Every place in Iowa, sortable · Compare Danbury 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 Danbury?
26 of the 57 figures for Danbury 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 Danbury 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 Danbury.