105 years in pictures
Census counts: 814 in 1930, 120 in 2020. The archive holds 1 old photo or paper going back to 2004 and a map from 1982 on.
1 place on the National Register of Historic Places.
- 1921Williamson is settled
Each edition grades its towns against each other only.

A town of 128, settled in 1921.
Williamson’s average trip to work is 35 minutes, against 19 minutes in Iowa’s towns and 25 minutes across U.S. towns. No town among the 141 in Iowa we compare has a higher share of residents below the poverty line than Williamson. Williamson School is on the National Register of Historic Places. Williamson has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
In a town this size, neighbors are the best guide. Ask them anything.
Census counts: 814 in 1930, 120 in 2020. The archive holds 1 old photo or paper going back to 2004 and a map from 1982 on.
1 place on the National Register of Historic Places.
Who provides power, water and the rest in Williamson, and how to reach them.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.
Ordered by what stands out in Williamson.
Most working residents leave Williamson for work: only 0% work in town. The top destinations are Chariton (27%), Ottumwa (5%) and Osceola (4%). Half commute less than 42 miles.
Census LEHD 2023 · ACS
Williamson has cold winters and warm summers. July afternoons reach 85°, January nights drop to 14° and about 24 inches of snow falls in a winter.
NOAA U.S. Climate Normals, 1991–2020
Williamson beats the Iowa average on 0 of 32 CDC measures and trails it on 6. 18% of adults smoke cigarettes in Williamson, above both the Iowa town median (15%) and the median of U.S. towns (14%). 20% of Williamson adults binge drink.
| Williamson | Iowa towns | U.S. towns | |
|---|---|---|---|
| Smoke cigarettes (CDC PLACES) | 18% | 15% | 14% |
| Binge drink (CDC PLACES) | 20% | 20% | 16% |
| Diabetes (CDC PLACES) | 13% | 12% | 12% |
| Obesity (CDC PLACES) | 40% | 38% | 35% |
| What stands out | Williamson | IA |
|---|---|---|
| More older adults who have lost all their teeth | 16.9% | 11.6% |
| More adults with COPD | 8.8% | 6.9% |
| More smokers | 18.4% | 14.5% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Expected storm and flood damage is higher than in 54% of U.S. communities.
FEMA National Risk Index · OpenFEMA
None within 15 miles of Williamson; the nearest are
About 4 of every 100 Williamson residents are enrolled in college, against 6 across Iowa.
Where Williamson’s working residents go each day. Line width shows the share.
Census LEHD 2023
City in Iowa, USA
Williamson is a city in Lucas County, Iowa, United States. The population was 120 at the time of the 2020 census.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
Short answers, built from the data on this page.
Williamson has fewer than 1,000 residents, too few for fair grades; the figures below are still real.