Fremont County, ID ZIP Codes
7 ZIP codes cover all or part of Fremont County, Idaho: 83445, 83420, 83451, 83429, 83438, 83421 and 83433. The Census Bureau counts 13,943 residents in the county, with a median household income of $72,683 and a median home value of $314,200. Median household income ranges from $68,012 in 83445 to $69,286 in 83420. Its largest communities include St. Anthony, Ashton, Parker, Island Park and Drummond.
Fremont County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 13,943 |
| Households | 4,654 |
| Median household income | $72,683 |
| Median home value | $314,200 |
| Median age | 40 |
| Median rent | $864 |
All 7 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 12,759 |
| Households (sum of ZIP codes) | 4,334 |
| Median household income, range across ZIP codes | $68,012 (83445) to $69,286 (83420) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $68,378 |
| Homeowners | 82.0% |
| Households with kids under 18 | 33.3% |
| Moved in the past year | 12.0% |
| Carrier routes in EDDM2GO's route library | 2 routes, 484 homes (1 of 7 ZIP codes) |
Top facts
- Highest median household income in Fremont County: 83420 ($69,286)
- Most residents: 83445 (7,975 people)
- Highest homeownership: 83420 (88.5% own their home)
- Most households with kids: 83445 (40.3% of households)
- Most new movers: 83420 (14.4% moved in last year)
- Youngest median age: 83445 (34.2 years)
- Highest median home value: 83420 ($337,700)
Every ZIP code in Fremont County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 83445 | Saint Anthony | 7,975 | 2,455 | $68,012 | $283,800 | 76.3% | 40.3% | 11.3% | — | — | 100% of its land |
| 83420 | Ashton | 2,580 | 990 | $69,286 | $337,700 | 88.5% | 20.7% | 14.4% | 2 | 501 | 100% of its land |
| 83451 | Teton | 993 | 349 | $67,946 | $259,300 | 84.5% | 37.8% | 19.1% | — | — | 33% of its land |
| 83429 | Island Park | 628 | 325 | $78,565 | $502,200 | 97.5% | 11.4% | 2.1% | — | — | 100% of its land |
| 83438 | Parker | 327 | 82 | $145,714 | $232,800 | 73.2% | 69.5% | 18.2% | — | — | 100% of its land |
| 83421 | Chester | 220 | 115 | — | $282,400 | 100.0% | 20.0% | 0.0% | — | — | 100% of its land |
| 83433 | Macks Inn | 36 | 18 | $94,250 | $265,000 | 100.0% | 0.0% | 0.0% | — | — | 100% of its land |
A ZIP code is listed for Fremont County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- St. Anthony — 3,911 residents · 1 ZIP code
- Ashton — 1,417 residents · 1 ZIP code
- Parker — 607 residents · 2 ZIP codes
- Island Park — 170 residents · 2 ZIP codes
- Drummond — 3 residents · 1 ZIP code
- Warm River — 0 residents · 1 ZIP code
Price a mailing to Fremont County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Fremont County, ID?
- 83445, 83420, 83451, 83429, 83438, 83421 and 83433. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Fremont County?
- 13,943 residents in 4,654 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Fremont County?
- $72,683 for the county as a whole. Its ZIP codes range from $68,012 (83445) to $69,286 (83420).
- Which Fremont County ZIP code has the highest median household income?
- 83420, at $69,286, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Fremont County?
- For the 1 of 7 ZIP codes in EDDM2GO's stored route library: 2 carrier routes reaching 484 residential and 17 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.