118 years in pictures
Census counts: 344 in 1920, 17 in 2020. The archive holds 2 old photos and papers going back to 2016 and 2 maps from 1953 on.
1 place on the National Register of Historic Places.
- 1908Ismay is settled
Each edition grades its towns against each other only.

The town, settled in 1908, counts 21 residents.
100% of households own their home in Ismay, above both Montana’s towns (64%) and U.S. towns (73%). Ismay Jail and Cottonwood Creek Bridge is on the National Register of Historic Places. Ismay 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: 344 in 1920, 17 in 2020. The archive holds 2 old photos and papers going back to 2016 and 2 maps from 1953 on.
1 place on the National Register of Historic Places.
Who provides power, water and the rest in Ismay, 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 Ismay.
Expected losses in Ismay break down as 39% from inland flooding and 32% from cold waves. Compared with 70% of U.S. communities, expected storm and flood damage locally is higher. One declared disaster, in 2011, has brought federal aid to Ismay households.
FEMA disaster declarations and aid · FEMA National Risk Index · OpenFEMA
Ismay’s typical July afternoon high is 88°F.
NOAA U.S. Climate Normals, 1991–2020
Ismay: 30% of adults have obesity. CDC measures, 32 in all: Ismay beats Montana on 6 and trails on 1. Two figures for adults in the town: 72% had a checkup this year, 29% feel lonely.
| Ismay | Montana towns | U.S. towns | |
|---|---|---|---|
| Binge drink (CDC PLACES) | 20% | 20% | 16% |
| Yearly checkup (CDC PLACES) | 72% | 72% | 79% |
| Feel lonely (CDC PLACES) | 29% | 31% | 33% |
| Obesity (CDC PLACES) | 30% | 32% | 35% |
| What stands out | Ismay | MT |
|---|---|---|
| Fewer older adults who have lost all their teeth | 8.3% | 12.3% |
| Fewer adults facing food insecurity | 9.4% | 11.7% |
| More adults who have had cancer | 10.3% | 9.3% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
None within 15 miles of Ismay; the nearest are
About 0 of every 100 Ismay residents are enrolled in college, against 5 across Montana.
Town in Montana, United States
Ismay is a town in Custer County, Montana, United States. The population was 17 at the 2020 census. The town is the least-populous incorporated municipality in the state of Montana. The town's name is an amalgamation of Isabella and May, the names of the daughters of Albert J. Earling, division superintendent (later president) of the Chicago, Milwaukee and St. Paul Railway. Other communities with related names include Earling, Iowa; Marmarth, North Dakota; and Alberton, Montana. As a publicity stunt coordinated by Kansas City radio station KYYS in 1993, the town unofficially took the name of Joe, Montana, after the NFL quarterback Joe Montana. The town's history and contemporary state (circ…
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Short answers, built from the data on this page.
Ismay has fewer than 1,000 residents, too few for fair grades; the figures below are still real.