ZIP code 83321
Where is ZIP code 83321?
Castleford, Idaho
Twin Falls County · Standard ZIP code
ZIP code 83321 belongs to Castleford, Idaho in Twin Falls County. 83321 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Mountain Time zone and uses area codes 208 and 986. About 482 people live in the 83321 area, where the median household income is $60,000. The closest ZIP codes are 83316 (Buhl, 7.2 mi northeast), 83328 (Filer, 13.6 mi east) and 83355 (Wendell, 18.2 mi northeast).
| ZIP code | 83321 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Castleford |
| State | Idaho (ID) |
| County | Twin Falls County |
| Time zone | Mountain Time · now |
| Area codes | 208, 986 |
| Coordinates | 42.521, -114.8734 map |
| 3-digit prefix | 833 |
Population and income in 83321
| Population | 482 · lower than 73% of Idaho ZIP codes |
|---|---|
| People per square mile | 3 · lower than 81% of Idaho ZIP codes |
| Median age | 46.8 years · higher than 63% of Idaho ZIP codes |
| Men / women | 59% / 41% |
| Median household income | $60,000 · lower than 77% of Idaho ZIP codes |
| Income per person | $26,022 |
| Below the poverty line | 15% |
| Bachelor’s degree or higher | 24% of adults 25+ |
| Median rent | $925 a month |
| Housing units | 231 |
| Households | 210 (2.3 people on average) |
| Owners / renters | 67% / 33% |
| Land area | 181.18 sq mi (plus 0.14 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 83321. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 83321
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 83316 | Buhl, ID | 7.2 mi NE | Standard |
| 83328 | Filer, ID | 13.6 mi E | Standard |
| 83355 | Wendell, ID | 18.2 mi NE | Standard |
| 83332 | Hagerman, ID | 20.3 mi N | Standard |
| 83301 | Twin Falls, ID | 20.7 mi E | Standard |
| 83303 | Twin Falls, ID | 21.2 mi E | PO Box only |
| 83338 | Jerome, ID | 23.3 mi NE | Standard |
| 83302 | Rogerson, ID | 25.3 mi SE | Standard |
| 83341 | Kimberly, ID | 25.9 mi E | Standard |
| 83334 | Hansen, ID | 29.2 mi E | Standard |
| 83314 | Bliss, ID | 29.3 mi N | Standard |
| 83330 | Gooding, ID | 29.9 mi N | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 83321 or measure the distance to another ZIP code.
How to address mail to 83321
123 MAIN ST
CASTLEFORD ID 83321
Put the city, the two-letter state code and the ZIP code on the last line. Avoid Roseworth: USPS doesn’t recognize it as the city for this ZIP code. Adding the 4-digit ZIP+4 code (83321-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 83321?
- 83321 is a Castleford, Idaho ZIP code.
- What county is 83321 in?
- ZIP code 83321 is in Twin Falls County, Idaho.
- What time zone is ZIP code 83321 in?
- 83321 is in the Mountain Time zone (America/Boise).
- What area code is 83321?
- Phone numbers in ZIP code 83321 use area codes 208 and 986.
- What is the population of ZIP code 83321?
- About 482 people live in ZIP code 83321, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 83321?
- The median household income in 83321 is $60,000 a year, lower than 77% of Idaho ZIP codes.
- What ZIP codes are near 83321?
- The nearest ZIP codes to 83321 are 83316 (Buhl, 7.2 miles), 83328 (Filer, 13.6 miles), 83355 (Wendell, 18.2 miles) and 83332 (Hagerman, 20.3 miles).