ZIP code 59323
Where is ZIP code 59323?
Colstrip, Montana
Rosebud County · PO Box only ZIP code
ZIP code 59323 belongs to Colstrip, Montana in Rosebud County. 59323 is a PO Box only ZIP code: it is used for post office boxes at the Colstrip post office, not for street addresses. It is in the Mountain Time zone and uses area code 406. About 2,101 people live in the 59323 area, where the median household income is $82,500. The closest ZIP codes are 59043 (Lame Deer, 23.1 mi south), 59327 (Forsyth, 24.2 mi north) and 59016 (Busby, 28.6 mi southwest).
| ZIP code | 59323 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Colstrip |
| State | Montana (MT) |
| County | Rosebud County |
| Time zone | Mountain Time · now |
| Area code | 406 |
| Coordinates | 45.9344, -106.6368 map |
| 3-digit prefix | 593 |
Population and income in 59323
| Population | 2,101 · higher than 76% of Montana ZIP codes |
|---|---|
| People per square mile | 39 · higher than 89% of Montana ZIP codes |
| Median age | 44.2 years · lower than 57% of Montana ZIP codes |
| Men / women | 49% / 51% |
| Median household income | $82,500 · higher than 75% of Montana ZIP codes |
| Income per person | $42,447 |
| Below the poverty line | 9.4% |
| Bachelor’s degree or higher | 26% of adults 25+ |
| Median home value | $194,900 · lower than 76% of Montana ZIP codes |
| Median rent | $659 a month |
| Housing units | 940 |
| Households | 802 (2.61 people on average) |
| Owners / renters | 83% / 17% |
| Land area | 53.35 sq mi (plus 0.29 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 59323. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 59323
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 59043 | Lame Deer, MT | 23.1 mi S | PO Box only |
| 59327 | Forsyth, MT | 24.2 mi N | Standard |
| 59016 | Busby, MT | 28.6 mi SW | Standard |
| 59004 | Ashland, MT | 29.4 mi SE | Unique |
| 59003 | Ashland, MT | 29.8 mi SE | Standard |
| 59333 | Hathaway, MT | 31.7 mi NE | Standard |
| 59010 | Bighorn, MT | 32.6 mi W | Standard |
| 59076 | Sanders, MT | 33.1 mi NW | Standard |
| 59347 | Rosebud, MT | 37.2 mi N | Standard |
| 59038 | Hysham, MT | 39.9 mi NW | Standard |
| 59012 | Birney, MT | 41.4 mi S | Standard |
| 59031 | Garryowen, MT | 44.1 mi SW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 59323 or measure the distance to another ZIP code.
How to address mail to 59323
PO BOX 123
COLSTRIP MT 59323
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (59323-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 59323?
- 59323 is a Colstrip, Montana ZIP code.
- What county is 59323 in?
- ZIP code 59323 is in Rosebud County, Montana.
- What time zone is ZIP code 59323 in?
- 59323 is in the Mountain Time zone (America/Denver).
- What area code is 59323?
- Phone numbers in ZIP code 59323 use area code 406.
- What is the population of ZIP code 59323?
- About 2,101 people live in ZIP code 59323, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 59323?
- The median household income in 59323 is $82,500 a year, higher than 75% of Montana ZIP codes.
- Can I use 59323 for a street address?
- No. 59323 is only for PO Boxes. Street addresses in Colstrip use another ZIP code.
- What ZIP codes are near 59323?
- The nearest ZIP codes to 59323 are 59043 (Lame Deer, 23.1 miles), 59327 (Forsyth, 24.2 miles), 59016 (Busby, 28.6 miles) and 59004 (Ashland, 29.4 miles).