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ThornburgIowaWelcomeSign
Iowa›Keokuk County

ThornburgIA

A town of 44, settled in 1879.

Photo: PopePompus · CC BY-SA 4.0
Photo of Thornburg

Thornburg, IA · Photo: PopePompus · CC BY-SA 4.0 · Source ↗

Is Thornburg a good place to live?

Thornburg’s average trip to work is 34 minutes, where Iowa’s towns sit at 19 minutes and U.S. towns at 25 minutes. Of the 141 Iowa towns we compare, none has a higher median age than Thornburg. Bruce Goldfish Fisheries is on the National Register of Historic Places. Thornburg has fewer than 1,000 residents, too few for fair grades; the figures below are still real.

Small town

44 people, and everyone knows the way

In a town this size, neighbors are the best guide. Ask them anything.

Nearby towns
Bruce Goldfish Fisheries
Bruce Goldfish Fisheries · National Register of Historic Places
Thornburg’s story

147 years in pictures

Census counts: 65 in 1880, a peak of 267 in 1900, 45 in 2020. The archive holds 3 old photos and papers going back to 2004 and 2 maps from 1965 on.

1 place on the National Register of Historic Places.

  • 1879Thornburg is settled
Explore the history →
Getting set up

Moving to Thornburg: who provides what

Who provides power, water and the rest in Thornburg, and how to reach them.

The full setup list →
PowerMidAmerican Energy11.2¢/kWh · EIA 2025HIFLD · EIA
Internet3 providers75% of addresses get 100/20 MbpsFCC
Trash & dumpNot on file yetWe don’t have Thornburg’s trash rules yet
SchoolsTri-County Community School DistrictWhich school depends on your addressNCES
Register to voteOnlineIn Iowa you can register online until 15 days before Election Day, in person up to and including Election Day, or by mail (postmarked 15 days before).vote.gov
Who runs elections hereKeokuk County AuditorKeokuk County; contacts on the Handbook page.FVAP, Nov 2025
ZIP code5025550255 100%Census 2020

EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.

The data

Ordered by what stands out in Thornburg.

Climate

In Thornburg, expect four seasons and pleasant summers

Thornburg has cold winters and warm summers. July afternoons reach 85°, January nights drop to 13° and about 28 inches of snow falls in a winter.

28″snow a winter

Typical low → high °F

Winter16–33°
Spring38–60°
Summer61–83°
Fall41–63°
Oct 15
typical first frost
Apr 24
typical last frost
+0.8°
vs. the 20th-century average

NOAA U.S. Climate Normals, 1991–2020

Schools

The schools Thornburg’s kids attend

Its public schools are run by the Tri-County Community School District. Its two schools are below.

SchoolLevelStudentsLetter
Tri-County Elementary SchoolLargest public elementary schoolGrades PK–6Grades PK–6102C+
Tri-County JR/SR High SchoolLargest public high schoolGrades 7–12Grades 7–1277C−

NCES · EDFacts

Natural hazards

Moderate risk in Thornburg, with inland flooding at the top

Expected storm and flood damage is higher than in 55% of U.S. communities.

55risk score of 100
FEMA risk score
55Moderate riskLowerHigher
Inland floodingTornadoesStrong wind
1
federal disasters paid out here

FEMA National Risk Index · OpenFEMA

Keep exploring

Everything we know about Thornburg

15pages on Thornburg
After high school

Colleges nearby

None within 15 miles of Thornburg; the nearest are

About Thornburg

City in Iowa, United States

Thornburg is a city in Keokuk County, Iowa, United States. The population was 45 at the time of the 2020 census. Its sole enterprise is the Tri-County Community School, a public school serving grades K-12.

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Established
1879
Area
0.2 sq mi
Elevation
879 ft
ZIP code
50255
Area code
641

Questions about Thornburg

Short answers, built from the data on this page.

Is Thornburg, IA a good place to live?

Thornburg has fewer than 1,000 residents, too few for fair grades; the figures below are still real.