138 years in pictures
Census counts: 214 in 1910, 17,694 in 2020. The archive holds 7 old photos and papers going back to 2004 and 2 maps from 1924 on.
- 1888Ammon is settled
Each edition grades its towns against each other only.

A town of 20,119, settled in 1888.
Ammon grades A− overall, ranked 8th of 58 in Idaho, with clear strengths and some subjects that lag. It is healthier than 88% of U.S. towns and it is more walkable than 84% of U.S. towns. It also does better than most on schools: its schools outperform 69% of the state's. Its lowest everyday mark is in cost of living: the typical home is worth about $417K, 5.2 years of the Idaho Falls metro’s $80K median household income. 31% of residents are under 18 in Ammon, above both Idaho’s towns (25%) and U.S. towns (22%). Among 59 Idaho towns, just 3 have a lower share of residents below the poverty line than Ammon. The biggest park or preserve is McCowin Park, at 20 acres.
Where Ammon beats most towns.
13,816 counted in 2010 and 17,694 in 2020; an estimated 20,119 in 2025.
Growth hasn’t slowed: 13.5% since 2020, after 28.1% in the decade before.
U.S. Census 2010 & 2020 counts · Census Bureau estimate, July 1, 2025
Each subject compared with towns across the country (schools within Idaho), ordered by how far Ammon is from typical.
How TownRatings grades towns →
Census counts: 214 in 1910, 17,694 in 2020. The archive holds 7 old photos and papers going back to 2004 and 2 maps from 1924 on.
Who provides power, water and the rest in Ammon, 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 Ammon.
Ammon pairs an A− overall with homes cheaper than the Idaho norm, has less tooth loss than most of Idaho and has added half again as many jobs in ten years.
Its widest gap with Idaho is tooth loss: 9.9% of those 65+ have lost all their teeth, against 16.2% statewide.
11% of adults report frequent physical distress in Ammon. Ammon beats the Idaho average on 17 of 32 CDC measures and trails it on 0. 27% of adults have high blood pressure in Ammon.
| Ammon | Idaho towns | U.S. towns | |
|---|---|---|---|
| Frequent physical distress (CDC PLACES) | 11% | 14% | 14% |
| High blood pressure (CDC PLACES) | 27% | 31% | 35% |
| Diabetes (CDC PLACES) | 8% | 10% | 12% |
| Get no exercise (CDC PLACES) | 19% | 23% | 25% |
| What stands out | Ammon | ID |
|---|---|---|
| Fewer older adults who have lost all their teeth | 9.9% | 16.2% |
| Fewer adults with COPD | 5.2% | 6.6% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Its public schools are run by the Bonneville Joint District. Three of its 13 schools are below, each with why it’s listed.
| School | Level | Students | Letter |
|---|---|---|---|
| Sandcreek Middle SchoolLargest public middle schoolGrades 7–8 | Grades 7–8 | 592 | B |
| Hillcrest High SchoolLargest public high schoolGrades 9–12 | Grades 9–12 | 1,230 | B+ |
| Woodland Hills ElementaryTop results in townGrades PK–6 | Grades PK–6 | 507 | A |
NCES · EDFacts · graded within ID on state tests and graduation
Ammon has cold winters and warm summers, with very little rain. July afternoons reach 86° and January nights drop to 13°.
NOAA U.S. Climate Normals, 1991–2020
Jobs based here grew from 3,935 in 2013 to 5,956.
Most working residents leave Ammon for work: only 10% work in town. Jobs based in Ammon grew to 5,956 in 2023, 2,021 more than in 2013. The median household income in Ammon is $86,000.
| Ammon | Idaho towns | U.S. towns | |
|---|---|---|---|
| Working residents who work in town | 9.9% | 23% | 8% |
| Median household income | $86,000 | $67,000 | $80,000 |
| Average trip to work | 22 minutes | 20 minutes | 25 minutes |
Census LEHD 2023 · ACS
Expected storm and flood damage is higher than in 64% of U.S. communities. One flood insurance claim has been paid in Ammon since 2006.
FEMA flood insurance claims · FEMA National Risk Index · OpenFEMA
| Ammon | Idaho towns | U.S. towns | |
|---|---|---|---|
| Conserved land | 1.1% | 2.1% | 4.3% |
| Miles of trail per square mile | 0.5 miles per square mile | 0.8 | 0.4 |
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Eagles Homestead Park | 0.5 mi | 10 |
| 2. Peterson Park | 0.4 mi | 9 |
| 3. McCowin Park | 0.1 mi | 20 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Ammon grades A− overall with a typical home of about $417K, below the Idaho typical value; only 3 of the 8 Idaho towns graded A− or better can say that.
The typical Ammon home is worth about $417,000, up 2% in a year, 13% below the Idaho typical home. Ammon’s median rent is $1,372 a month.
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
2 within 15 miles of the center of Ammon
About 4 of every 100 Ammon residents are enrolled in college, against 6 across Idaho.
City in Idaho, United States
Ammon is a suburb city in Bonneville County, Idaho, United States. As of the 2010 US Census, the population of Ammon was 13,816. By the 2020 census, Ammon's population had grown to 17,694. It lies directly to the east of Idaho Falls and to the west of the Ammon foothills, and is the second most populous city in the Idaho Falls metropolitan area. As of 2020, Ammon is the 15th most populous city in Idaho. It was one of the state's fastest growing cities from 2000 to 2010, experiencing a 123.3% growth rate based on the 2010 US Census.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
2 towns share a border with Ammon.
| Town | ID rank | Overall | Cost | Safety | Schools | Health |
|---|---|---|---|---|---|---|
| Ammon | #8 | A− | C | — | B+ | A |
| Lincoln | #7 | A− | B | — | B+ | A |
| Idaho Falls | #37 | C+ | B− | C+ | C | B+ |
Ammon and Lincoln report no FBI crime data of their own. Compare Ammon with a neighbor →
Short answers, built from the data on this page.
By most measures, yes. Ammon grades A− overall, better than 78% of U.S. towns and #8 of 58 in Idaho. It grades A for health and B+ for schools.
Cost of living, which also weighs rents, property taxes and how many households pay 30% or more of their income for housing, grades C.