176 years in pictures
Census counts: 107 in 1860, a peak of 538 in 1900, 119 in 2020. The archive holds 4 old photos and papers going back to 2004 and 2 maps from 1929 on.
- 1850Hamilton is settled
Each edition grades its towns against each other only.

Hamilton has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
Where Hamilton beats most towns.
In a town this size, neighbors are the best guide. Ask them anything.
Census counts: 107 in 1860, a peak of 538 in 1900, 119 in 2020. The archive holds 4 old photos and papers going back to 2004 and 2 maps from 1929 on.
Who provides power, water and the rest in Hamilton, 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 Hamilton.
Half commute less than 16 miles. Among residents in Hamilton, 20% live below the poverty line, where Iowa’s towns sit at 11% and U.S. towns at 9.6%. The top destinations are Knoxville (16%), Oskaloosa (12%) and Pella (10%).
| Hamilton | Iowa towns | U.S. towns | |
|---|---|---|---|
| Average trip to work | 43 minutes | 19 minutes | 25 minutes |
| Below the poverty line | 20% | 11% | 9.6% |
Census LEHD 2023 · ACS
Compared with nearly three quarters of U.S. communities, expected storm and flood damage in Hamilton is higher. Federal disaster aid has reached households in Hamilton after 2 declared disasters, most recently in 2010. 53% of the town’s expected losses from natural hazards come from inland flooding, followed by drought at 25%.
FEMA disaster declarations and aid · FEMA National Risk Index · OpenFEMA
The range runs from 14° on a January night to 85° on a July afternoon, with about 30 inches of snow a winter.
NOAA U.S. Climate Normals, 1991–2020
44% of adults in Hamilton have obesity; 19% smoke cigarettes. Among adults locally, 22% binge drink, above both Iowa’s towns (20%) and U.S. towns (16%). In Hamilton, 31% of adults sleep under 7 hours.
| Hamilton | Iowa towns | U.S. towns | |
|---|---|---|---|
| Binge drink (CDC PLACES) | 22% | 20% | 16% |
| Obesity (CDC PLACES) | 44% | 38% | 35% |
| Smoke cigarettes (CDC PLACES) | 19% | 15% | 14% |
| Sleep under 7 hours (CDC PLACES) | 31% | 32% | 36% |
| What stands out | Hamilton | IA |
|---|---|---|
| More older adults who have lost all their teeth | 23.4% | 11.6% |
| More smokers | 19.2% | 14.5% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Among households in Hamilton, 80% own their home.
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
None within 15 miles of Hamilton; the nearest are
About 1 of every 100 Hamilton residents are enrolled in college, against 6 across Iowa.
Where Hamilton’s working residents go each day. Line width shows the share.
Census LEHD 2023
City in Iowa, USA
Hamilton is a city in Marion County, Iowa, United States. The population was 119 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.
Hamilton has fewer than 1,000 residents, too few for fair grades; the figures below are still real.