ZIP code 83421: Chester, ID
83421 is a ZIP code in Chester, Idaho, mainly in Fremont County, part of the Rexburg, ID micro area. About 220 people live here.
- Population
- 220
- Median household income
- —
- Typical home value
- $282,400ACS median value
- Median rent
- —gross, per month
- Median age
- 62.4
- Homeowners
- 100%of occupied homes
Shaded: ZIP code 83421's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 83421 details
| City | Chester |
|---|---|
| State | Idaho |
| County | Fremont County |
| Metro area | Rexburg, ID |
| Time zone | Mountain Time (UTC−7), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 11.7 sq mi, plus 0.2 sq mi of water |
| Population density | 19 people per sq mi |
| Bachelor's degree or higher | 7.6% of adults 25+ |
| Center coordinates | 44.00188, -111.54732 |
ZIP codes near 83421
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 83445 | Saint Anthony, ID | 10.1 mi | 7,975 |
| 83451 | Teton, ID | 10.3 mi | 993 |
| 83436 | Newdale, ID | 10.4 mi | 778 |
| 83438 | Parker, ID | 10.9 mi | 327 |
| 83420 | Ashton, ID | 11.7 mi | 2,580 |
| 83448 | Sugar City, ID | 13.3 mi | 3,365 |
| 83441 | Rexburg, ID | 17.2 mi | — |
| 83460 | Rexburg, ID | 17.4 mi | 56 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 83421?
A typical home in ZIP code 83421 is worth about $282,400 (ACS median value). See what buying here would cost per month, with Idaho average taxes and insurance filled in.
About ZIP code 83421
What city is ZIP code 83421?
ZIP code 83421 is in Chester, ID, in Fremont County.
What county is ZIP code 83421 in?
83421 is mainly in Fremont County, Idaho.
What is the population of ZIP code 83421?
About 220 people live in ZIP code 83421, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 83421 in?
83421 is in Mountain Time (UTC−7). It observes daylight saving time.