ZIP code 83321: Castleford, ID
83321 is a ZIP code in Castleford, Idaho, mainly in Twin Falls County, part of the Twin Falls, ID metro area. About 482 people live here.
- Population
- 482
- Median household income
- $60,000
- Typical home value
- —
- Median rent
- $925gross, per month
- Median age
- 46.8
- Homeowners
- 66.7%of occupied homes
Shaded: ZIP code 83321's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 83321 details
| City | Castleford |
|---|---|
| State | Idaho |
| County | Twin Falls County |
| Metro area | Twin Falls, ID |
| Time zone | Mountain Time (UTC−7), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 181.2 sq mi, plus 0.1 sq mi of water |
| Population density | 3 people per sq mi |
| Bachelor's degree or higher | 24.3% of adults 25+ |
| Average commute | 21.4 minutes |
| Center coordinates | 42.34562, -114.84744 |
Median rent in 83321 by bedrooms
| Size | Median gross rent |
|---|---|
| 2 bedrooms | $843/mo |
| 3 bedrooms | $1,075/mo |
Gross rent includes utilities paid by the tenant. ACS 2020–2024; sizes with too few rentals to estimate are left out.
ZIP codes near 83321
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 83301 | Twin Falls, ID | 16.9 mi | 63,592 |
| 83316 | Buhl, ID | 19.4 mi | 10,456 |
| 83328 | Filer, ID | 19.5 mi | 6,320 |
| 83302 | Rogerson, ID | 20.3 mi | 35 |
| 83303 | Twin Falls, ID | 24.8 mi | — |
| 83341 | Kimberly, ID | 24.9 mi | 9,531 |
| 83334 | Hansen, ID | 28.8 mi | 2,227 |
| 83355 | Wendell, ID | 29.2 mi | 5,469 |
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
About ZIP code 83321
What city is ZIP code 83321?
ZIP code 83321 is in Castleford, ID, in Twin Falls County.
What county is ZIP code 83321 in?
83321 is mainly in Twin Falls County, Idaho.
What is the population of ZIP code 83321?
About 482 people live in ZIP code 83321, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 83321 in?
83321 is in Mountain Time (UTC−7). It observes daylight saving time.