City · Iowa
Colesburg, Iowa
Colesburg, city, in Delaware County, Iowa. Colesburg had 380 residents on July 1, 2025 by the Census Bureau's estimate, down 1.6% since 2020; the 2020 Census counted 386 and the ACS 2020-2024 5-year estimates put it at 545 (±159). GEOID 1915015.
Residents, July 2025 estimate
380
Census Bureau estimate (no margin published)
2020 Census count: 386 · ACS 2020-2024: 545 ±159
Median household income
$51,719
±$22,531 (90% margin)
Iowa: $75,059
Median home value
$117,100
±$26,223 (90% margin)
Iowa: $208,000
Median gross rent
$508
±$384 (90% margin)
Iowa: $972
Where is Colesburg and what county is it in?
Colesburg is a city in Delaware County, Iowa. It covers 0.3 square miles of land, 1,313 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 Colesburg, and is it growing?
The Census Bureau estimates that 380 people lived in Colesburg on July 1, 2025, down 1.6% since 2020, while Iowa grew 1.5%. The 2020 Census counted 386 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 545 (±159).
| Measure | Colesburg | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 545 ±159 | 17,558 | no clear change |
| Households | 254 ±66 | 7,369 | no clear change |
| Average household size | 2.15 ±0.29 | 2.35 | no clear change |
| Housing units | 276 ±68 | 8,169 | no clear change |
Colesburg's population since 2000
From 412 in 2000 to 380 in 2025: down 7.8%. The 2000, 2010 and 2020 figures are census counts, each for Colesburg 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 Colesburg?
The median resident of Colesburg is 54.1 years old; 17.2% are under 18 and 27.0% are 65 or older. The largest group is non-Hispanic white residents at 97.1%, then non-Hispanic residents of two or more races at 2.9%.
| Measure | Colesburg | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 54.1 ±10.5 | 43.4 | no clear change |
| Under 18 years | 17.2% ±6.8 pts | 23.3% | – |
| 65 years and over | 27.0% ±10.1 pts | 21.6% | – |
| Male | 50.1% ±6.1 pts | 51.1% | – |
| Hispanic or Latino (any race) | 0.0% ±4.5 pts | 1.7% | – |
| White alone, not Hispanic | 97.1% ±4.6 pts | 94.1% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±4.5 pts | 0.1% | – |
| Asian alone, not Hispanic | 0.0% ±4.5 pts | 0.0% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±4.5 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±4.5 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.9% ±4.6 pts | 3.7% | – |
| Some other race alone, not Hispanic | 0.0% ±4.5 pts | 0.3% | – |
| Born outside the United States | 0.0% ±4.5 pts | 0.3% | – |
| Speak a language other than English at home (age 5+) | 0.0% ±4.7 pts | 2.4% | – |
| Civilian veterans (age 18+) | 4.4% ±2.7 pts | 6.3% | – |
| With a disability | 9.9% ±4.1 pts | 15.1% | – |
| No health insurance coverage | 0.7% ±0.9 pts | 3.3% | – |
| High school graduate or higher (age 25+) | 89.6% ±6.4 pts | 93.7% | – |
| Bachelor's degree or higher (age 25+) | 13.4% ±7.1 pts | 22.6% | no clear change |
| Graduate or professional degree (age 25+) | 6.4% ±6.1 pts | 6.5% | – |
| Lived in the same house a year earlier | 96.3% ±4.0 pts | 93.4% | – |
| Moved from another state in the past year | 0.0% ±4.6 pts | 0.8% | – |
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 Colesburg earn?
Half of Colesburg's 254 households earn less than $51,719 a year (±$22,531), against $74,989 in Delaware County and $75,059 in Iowa. In 2015-2019 it was $61,095 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Colesburg | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $51,719 ±$22,531 | $74,989 | no clear change |
| Mean household income | $79,281 ±$15,373 | $96,512 | – |
| Per capita income | $37,828 ±$8,436 | $41,445 | no clear change |
| People below the poverty line | 4.4% ±3.3 pts | 7.8% | – |
| Children under 18 below the poverty line | 3.2% ±7.5 pts | 5.6% | – |
| Households receiving SNAP | 7.9% ±7.3 pts | 8.5% | – |
| Households with a computer | 85.4% ±10.4 pts | 90.2% | – |
| Households with a broadband subscription | 79.5% ±11.0 pts | 85.9% | – |
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 Colesburg?
Owners occupy 85.4% of Colesburg's occupied homes and renters 14.6%. The median owner-occupied home is valued at $117,100 by its owner (±$26,223).
| Measure | Colesburg | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $117,100 ±$26,223 | $177,900 | no clear change |
| Median gross rent | $508 ±$384 | $764 | – |
| Renters paying 35% or more of income on rent | 10.8% ±14.5 pts | 36.8% | – |
| Median monthly owner costs, with a mortgage | $1,094 ±$93 | $1,517 | – |
| Owner-occupied homes | 85.4% ±11.0 pts | 79.6% | no clear change |
| Renter-occupied homes | 14.6% ±11.0 pts | 20.4% | – |
| Housing units | 276 ±68 | 8,169 | no clear change |
| Homeowner vacancy rate | 3.9% ±4.9 pts | 1.0% | – |
| Rental vacancy rate | 0.0% ±42.8 pts | 0.5% | – |
| Single-family detached homes | 87.0% ±10.3 pts | 85.7% | – |
| Mobile homes | 0.7% ±1.1 pts | 2.9% | – |
| Built 2020 or later | 0.0% ±8.7 pts | 1.5% | – |
| Built 2010 to 2019 | 1.4% ±2.3 pts | 5.4% | – |
| Built 1939 or earlier | 38.0% ±13.4 pts | 31.7% | – |
| Households with no vehicle | 1.2% ±1.7 pts | 8.5% | – |
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 Colesburg building?
Builders took permits for 0 new housing units in Colesburg in 2025 (0 in single-family houses), 0.0 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 Colesburg work and get to work?
64.5% of Colesburg's workers drive alone. The average trip to work takes 28.4 minutes. The unemployment rate in 2020-2024 averaged 4.4%.
| Measure | Colesburg | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 64.1% ±10.3 pts | 69.6% | – |
| Unemployment rate | 4.4% ±2.8 pts | 2.0% | – |
| Drove alone to work | 64.5% ±11.6 pts | 80.0% | – |
| Carpooled | 20.8% ±12.1 pts | 7.7% | – |
| Public transportation | 0.0% ±8.6 pts | 0.1% | – |
| Walked | 11.1% ±9.3 pts | 2.2% | – |
| Worked from home | 2.9% ±2.7 pts | 9.2% | – |
| Mean travel time to work | 28.4 min ±6.7 | 20.3 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 Colesburg?
No census tract lies mostly in Colesburg; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9501Delaware County | 3,820 | $83,523 |
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 Colesburg) · Census block assignment files
How does Colesburg compare with other places in Iowa?
By the Census Bureau's July 2025 estimates, Colesburg is the 14,314th-most populous of the 19,476 U.S. incorporated places that have one and the 501st-most populous of 939 in Iowa.
Colesburg 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 | 501st | 939 |
Colesburg's figures with every place in Iowa (CSV)
Every place in Iowa, sortable · Compare Colesburg 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 Colesburg?
27 of the 57 figures for Colesburg 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 Colesburg 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 Colesburg.