83321 ZIP Code, Castleford, ID
83321 is a ZIP code in Castleford, Idaho in Twin Falls County. It covers 181 square miles of land. The closest ZIP codes are 83301, 83316 and 83328. 482 people live here in 210 households. It is rural, with fewer than 100 people per square mile, and owners and renters are mixed (67% own). Median household income is $60,000, below the Idaho median of $77,800; the median age is 46.8, older than most ZIP codes.
Quick facts
- Mailing city: Castleford, ID
- County: Twin Falls County
- Land area: 181 sq mi
- Population: 482
- Median household income: $60,000
Key figures
| Measure | Value |
|---|---|
| Residents | 482 |
| Households | 210 |
| Median household income | $60,000 |
| Income per person | $26,022 |
| Median age | 46.8 |
| Homeowners | 66.7% |
| Median home value | not published |
| Median rent | $925 |
| Bachelor's degree or higher | 24.3% |
| Average commute (minutes) | 21.4 |
| Households with kids under 18 | 31.0% |
| Moved in the past year | 12.5% |
| Below the poverty line | 14.8% |
| Broadband internet | 86.7% |
| Speak a non-English language at home | 21.7% |
Household income
| % of households | Value |
|---|---|
| <$10K | 7.1% |
| $10–15K | 4.3% |
| $15–25K | 8.6% |
| $25–35K | 8.1% |
| $35–50K | 10.5% |
| $50–75K | 25.2% |
| $75–100K | 18.1% |
| $100–150K | 14.3% |
| $150–200K | 2.4% |
| $200K+ | 1.4% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.4% |
| 10–19 | 14.3% |
| 20–24 | 0.8% |
| 25–34 | 9.3% |
| 35–44 | 9.8% |
| 45–54 | 15.4% |
| 55–64 | 12.8% |
| 65–74 | 17.2% |
| 75+ | 8.9% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 20.8% |
| Owned outright | 39.8% |
| Rented | 30.3% |
| Vacant | 9.1% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 81.4% |
| Townhome | 0.0% |
| 2–4 units | 2.2% |
| 5–19 units | 0.0% |
| 20+ units | 0.0% |
| Mobile / other | 16.5% |
Businesses in 83321
11 business establishments with 61 employees (ZIP Codes Business Patterns 2023).
- Transportation and Warehousing: 3
EDDM carrier routes
See every USPS carrier route in 83321 with residential and business mailbox counts on the route map. Open the EDDM route map.
Nearby ZIP codes
- 83301 — Twin Falls city, ID (16.9 mi)
- 83316 — Buhl city, ID (19.4 mi)
- 83328 — Filer city, ID (19.5 mi)
- 83302 (20.3 mi)
- 83341 — Kimberly city, ID (24.9 mi)
Areas that include 83321
- Castleford, ID ZIP codes — 1 ZIP code
- Twin Falls County ZIP codes — 9 ZIP codes
- Idaho ZIP code data
Mail every home in 83321
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 83321, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 83321 in?
- 83321 is a Castleford, ID mailing address. None of its land lies inside a Census-defined city or community.
- What county is 83321 in?
- 83321 is in Twin Falls County.
- What is the population of 83321?
- About 482 people (±150), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 500.
- What is the median household income in 83321?
- $60,000 (±$13,489), compared with $77,800 for Idaho as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 83321?
- EDDM2GO's stored route library does not include 83321 yet. The EDDM route map loads its carrier routes and mailbox counts when you search the ZIP code.
- What ZIP codes are near 83321?
- The closest, measured center to center: 83301 (16.9 mi, Twin Falls), 83316 (19.4 mi, Buhl), 83328 (19.5 mi, Filer), 83302 (20.3 mi) and 83341 (24.9 mi, Kimberly).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.