ZIP code 01258
Where is ZIP code 01258?
South Egremont, Massachusetts
Berkshire County · PO Box only ZIP code
ZIP code 01258 belongs to South Egremont, Massachusetts in Berkshire County. 01258 is a PO Box only ZIP code: it is used for post office boxes at the South Egremont post office, not for street addresses. It is in the Eastern Time zone and uses area codes 413, 518, 838, 860 and 959. About 193 people live in the 01258 area, where the median household income is $142,500. The closest ZIP codes are 12517 (Copake Falls, 3.7 mi northwest), 01257 (Sheffield, 4.9 mi east) and 12516 (Copake, 5 mi west).
| ZIP code | 01258 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | South Egremont |
| Also accepted | Mount Washington, Mt Washington, S Egremont |
| State | Massachusetts (MA) |
| County | Berkshire County |
| Time zone | Eastern Time · now |
| Area codes | 413, 518, 838, 860, 959 |
| Coordinates | 42.1012, -73.4566 map |
| 3-digit prefix | 012 |
Population and income in 01258
| Population | 193 · lower than 96% of Massachusetts ZIP codes |
|---|---|
| People per square mile | 9 · lower than 99% of Massachusetts ZIP codes |
| Median age | 52.1 years · higher than 82% of Massachusetts ZIP codes |
| Men / women | 51% / 49% |
| Median household income | $142,500 · higher than 80% of Massachusetts ZIP codes |
| Income per person | $56,602 |
| Below the poverty line | 2.1% |
| Bachelor’s degree or higher | 46% of adults 25+ |
| Median home value | $714,300 · higher than 75% of Massachusetts ZIP codes |
| Housing units | 187 |
| Households | 78 (2.47 people on average) |
| Owners / renters | 87% / 13% |
| Land area | 22.25 sq mi (plus 0.15 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 01258. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 01258
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 12517 | Copake Falls, NY | 3.7 mi NW | Standard |
| 01257 | Sheffield, MA | 4.9 mi E | Standard |
| 12516 | Copake, NY | 5 mi W | Standard |
| 06079 | Taconic, CT | 5.5 mi SE | PO Box only |
| 01252 | North Egremont, MA | 6.8 mi N | Standard |
| 06068 | Salisbury, CT | 7.1 mi S | Standard |
| 12529 | Hillsdale, NY | 7.6 mi NW | Standard |
| 01222 | Ashley Falls, MA | 7.6 mi E | Standard |
| 12503 | Ancramdale, NY | 7.8 mi SW | Standard |
| 01230 | Great Barrington, MA | 8.2 mi NE | Standard |
| 06018 | Canaan, CT | 8.6 mi SE | Standard |
| 12502 | Ancram, NY | 9.6 mi W | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 01258 or measure the distance to another ZIP code.
How to address mail to 01258
PO BOX 123
SOUTH EGREMONT MA 01258
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts MOUNT WASHINGTON, MT WASHINGTON and S EGREMONT as the city name for 01258. Avoid So Egremont: USPS doesn’t recognize it as the city for this ZIP code. Adding the 4-digit ZIP+4 code (01258-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 01258?
- 01258 is a South Egremont, Massachusetts ZIP code. Mount Washington, Mt Washington and S Egremont are also accepted as the city name.
- What county is 01258 in?
- ZIP code 01258 is in Berkshire County, Massachusetts.
- What time zone is ZIP code 01258 in?
- 01258 is in the Eastern Time zone (America/New_York).
- What area code is 01258?
- Phone numbers in ZIP code 01258 use area codes 413, 518, 838, 860 and 959.
- What is the population of ZIP code 01258?
- About 193 people live in ZIP code 01258, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 01258?
- The median household income in 01258 is $142,500 a year, higher than 80% of Massachusetts ZIP codes.
- Can I use 01258 for a street address?
- No. 01258 is only for PO Boxes. Street addresses in South Egremont use another ZIP code.
- What ZIP codes are near 01258?
- The nearest ZIP codes to 01258 are 12517 (Copake Falls, 3.7 miles), 01257 (Sheffield, 4.9 miles), 12516 (Copake, 5 miles) and 06079 (Taconic, 5.5 miles).