Each edition grades its towns against each other only.
Island Park’s July high is 78°F, against 89°F in Idaho’s towns and 85°F across U.S. towns. Of the 60 Idaho towns we compare, none has a higher median age than Island Park. 46% of the land in Island Park is conserved, above both the Idaho town median (2.1%) and the median of U.S. towns (4.3%). Island Park has 2 places on the National Register of Historic Places, among them Johnny Sack Cabin and Bishop Mountain Lookout. Island Park has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
Where Island Park beats most towns.
In a town this size, neighbors are the best guide. Ask them anything.
Census counts: 50 in 1930, a peak of 286 in 2010, 193 in 2020. The archive holds 12 old photos and papers going back to 2004 and a map from 1964 on.
2 places on the National Register of Historic Places.
Who provides power, water and the rest in Island Park, and how to reach them.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 12, 2025.
Ordered by what stands out in Island Park.
People 65 and older are 55% of residents (17% statewide); adults 18 to 34 are 4% of residents (23% statewide). 38% of Island Park adults 25 and older hold a bachelor’s degree or more.
48% women, 52% men
That’s an even split within the survey’s margin of ±8.6 points. Across Idaho, 49.7% of residents are women.
| Island Park | ID | U.S. | |
|---|---|---|---|
| Under 10 | 2.9% | 12.5% | 11.6% |
| 10 to 17 | 3.5% | 11.6% | 10.3% |
| 18 to 24 | 0% | 9.8% | 9.1% |
| 25 to 34 | 3.5% | 13% | 13.7% |
| 35 to 44 | 10% | 13.1% | 13.2% |
| 45 to 54 | 10.6% | 11.3% | 12.2% |
| 55 to 64 | 14.1% | 11.7% | 12.7% |
| 65 to 74 | 46.5% | 10.4% | 10.2% |
| 75 and older | 8.8% | 6.6% | 7% |
| No diploma | 3.8% | 8.1% | 10.4% |
| High school | 29.6% | 26.1% | 26% |
| Some college | 15.1% | 24.2% | 19.1% |
| Associate’s | 13.2% | 9.7% | 8.8% |
| Bachelor’s | 23.3% | 21.3% | 21.6% |
| Graduate | 15.1% | 10.5% | 14.1% |
U.S. Census Bureau · ACS 2020-2024 5-year estimates · in a town of 200, single groups can be off by several points
5.8 miles of trail in 1 park or preserve. Island Park’s trail density is 0.9 miles per square mile.
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Henrys Lake Wilderness Study Area | — | 1 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
1.2% of residents live below the poverty line in Island Park. Jobs based in Island Park grew to 245 in 2023, 106 more than in 2013. The median household income in Island Park is $91,000.
| Island Park | Idaho towns | U.S. towns | |
|---|---|---|---|
| Below the poverty line | 1.2% | 12% | 9.6% |
| Median household income | $91,000 | $67,000 | $80,000 |
| Average trip to work | 20 minutes | 20 minutes | 25 minutes |
| Working residents who work in town | 15% | 22% | 8% |
Census LEHD 2023 · ACS
Expected storm and flood damage is higher than in 82% of U.S. communities.
FEMA National Risk Index · OpenFEMA
Typical home values rose 6.2% in the year to September 2026.
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
Island Park has cold, snowy winters and pleasant summers. July afternoons reach 78°, January nights drop to 6° and about 177 inches of snow falls in a winter.
NOAA U.S. Climate Normals, 1991–2020
Island Park beats the Idaho average on 15 of 32 CDC measures and trails it on 7.
| Island Park | Idaho towns | U.S. towns | |
|---|---|---|---|
| Feel lonely (CDC PLACES) | 24% | 30% | 33% |
| Frequent mental distress (CDC PLACES) | 12% | 17% | 17% |
| Binge drink (CDC PLACES) | 12% | 15% | 16% |
| Yearly checkup (CDC PLACES) | 81% | 73% | 79% |
| What stands out | Island Park | ID |
|---|---|---|
| Fewer older adults who have lost all their teeth | 5.9% | 16.2% |
| Fewer uninsured adults | 6.1% | 10.7% |
| More adults who have had cancer | 13.1% | 8.3% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
None within 15 miles of Island Park; the nearest are
About 0 of every 100 Island Park residents are enrolled in college, against 6 across Idaho.
Where Island Park’s working residents go each day. Line width shows the share.
Census LEHD 2023
City in Idaho, United States
Island Park is a city in Fremont County, Idaho, United States. The city's population was 193 at the 2020 census, down from 286 in 2010. The city was incorporated by owners of the many lodges and resorts along U.S. Route 20 in 1947, primarily to circumvent Idaho's liquor laws that prohibited the sale of liquor outside of city limits. It is only 500 feet (150 m) wide in most locations and at 33 miles (53 km), claims to have the longest "Main Street" in the world. Island Park is part of the Rexburg Micropolitan Statistical Area.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
Short answers, built from the data on this page.
Island Park has fewer than 1,000 residents, too few for fair grades; the figures below are still real.