HomeIowaKeokuk CountyThornburg
Thornburg, Iowa: commercial real estate data.
Thornburg is a Census city of 55 people across 0.20 square miles of land, in Keokuk County. Median household income is $39,861, 100.0 percent of occupied homes are owned.
Underlined figures are computed by MMCG Analytics, not published by the agency.
This is a small place, and the figures below carry wide margins.
The American Community Survey reaches Thornburg through a sample, not a count, and in a place this size that sample is thin. The population estimate here is 55 with a margin of error of plus or minus 29, which is 52.7 percent of the estimate itself. Every figure whose margin reaches 20 percent is printed with that margin beside it, so you can see the width of each one rather than having to assume it.
Nothing has been removed or adjusted. These are the published federal estimates, shown with the uncertainty the Census publishes alongside them.
Thornburg
What Thornburg is
- Census place typecity
- Land area0.2 sq mi
- Water area0 sq mi
- Population per square mile of land276 plus or minus 146
- County holding the largest share of its areaKeokuk County, 100.0 percent
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Thornburg
How many people live in Thornburg
- Population55 plus or minus 29
- Median age60.4 plus or minus 14.3
- Population under 182 plus or minus 10
- Share under 183.6 percent plus or minus 18.9
- Population 65 and over25 plus or minus 17
- Share 65 and over45.5 percent plus or minus 20.3
- Households27 plus or minus 17
- Family households16 plus or minus 13
- Share of households that are families59.3 percent plus or minus 30.4
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Thornburg
Income and work in Thornburg
- Median household income$39,861 plus or minus $28,462
- Per capita income$28,180 plus or minus $7,787
- Civilian labor force26 plus or minus 24
- Employed22 plus or minus 22
- Unemployed4 plus or minus 6
- Unemployment rate15.4 percent plus or minus 18.2
- Adults 25 and over50 plus or minus 26
- Adults 25 and over with a high school diploma or higher100.0 percent plus or minus 71.9
- Adults 25 and over with a bachelor degree or higher38.0 percent plus or minus 31.2
- Adults 25 and over with a graduate degree6.0 percent plus or minus 21.3
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Thornburg
Housing in Thornburg
- Housing units27 plus or minus 17
- Occupied units27 plus or minus 17
- Vacant units0
- Vacancy rate0.0 percent
- Owner occupied27 plus or minus 17
- Renter occupied0
- Ownership rate100.0 percent
- Single family units27 plus or minus 17
- Share single family100.0 percent
- Units in buildings of two or more0
- Share in buildings of two or more0.0 percent
- Mobile homes0
- Median year structure built1938
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Thornburg
How Thornburg gets to work
- Workers 16 and over who commute22 plus or minus 22
- Commuting under 15 minutes0
- Share commuting under 15 minutes0.0 percent
- Commuting 30 minutes or more16 plus or minus 17
- Share commuting 30 minutes or more72.7 percent plus or minus 24.9
- Drove alone72.7 percent plus or minus 26.1
- Carpooled27.3 percent plus or minus 24.1
- Public transport0.0 percent
- Walked0.0 percent
- Worked from home0.0 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Thornburg
Flood risk in Thornburg
- NFIP communityCity of Thornburg
- NFIP community number190975
- Participating in the NFIPYes
- Community Rating System classNone
- Currently effective map date(NSFHA)
The City of Thornburg participates in the National Flood Insurance Program as community 190975 and carries no Community Rating System class, so no CRS premium discount applies to it.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
Keokuk County, not Thornburg
Keokuk County context, not Thornburg figures
- Establishments in Keokuk County236
- Covered employment, Keokuk County2,292
- Average annual pay, Keokuk County$47,453
- Housing units permitted, Keokuk County1
Every figure in this section is published for Keokuk County as a whole and is not a measurement of Thornburg.
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual.
Coverage
What this page does not hold.
Parcel detail, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Common questions
Thornburg questions, answered from the record.
How many people live in Thornburg, Iowa?
55, in 27 households. Thornburg city covers 0.20 square miles of land, which is 276 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Thornburg in?
Keokuk County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.
What is the median household income in Thornburg?
$39,861. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Is Thornburg in the National Flood Insurance Program?
Yes. Thornburg appears in the FEMA Community Status Book as Thornburg, city of, community 190975, with no Community Rating System class, so no CRS discount applies. Whether a specific parcel sits in a mapped special flood hazard area is an address level question the platform answers.
Are the county figures on this page Thornburg figures?
No, and they are labeled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Keokuk County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Thornburg.
Is zoning published for Thornburg?
No. Nothing on this page presents parcel level zoning.
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