South Egremont, MA 01258 ZIP Code Profile

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South Egremont, MA

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ZIP Code 01258: Basic Data & USPS Preferred City Name

Preferred Name, USPS
South Egremont, MA 01258

Acceptable Alternative
Mount Washington, MA 01258
Mt Washington, MA 01258
S Egremont, MA 01258

Not Acceptable, USPS
So Egremont, MA 01258

  • ZIP Code Type: PO BOX
  • County: Berkshire County
  • Centroid: Latitude 42.108, Longitude -73.465
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 41
  • PO Box Addresses: 426
  • Residential Addresses: 96
    • Multi-Family Addresses: 0
    • Single Family Addresses: 96

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 1, 2018, Maps updated: February 1, 2018.

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South Egremont, MA 01258 Data & Demographics (As of July 1, 2017)


Total Population 170
Daytime Population: Workers 155
Daytime Population: Residents 71
Total Daytime Population (TDP) 226
Ratio TDP/Total Population1 1.33
Population in Households 169
Population in Familes 127
Population in Group Qrtrs 1
Population Density2 8
Diversity Index3 12


Median Household Income $56,472
Average Household Income $82,654
Per Capita Income $37,055


Total Housing Units 149 (100%)
Owner Occupied HU 62 (41.6%)
Renter Occupied HU 14 ( 9.4%)
Vacant Housing Units 73 (49.0%)
Median Home Value $500,000
Average Home Value $635,081


Total Households 76
Average Household Size 2.22
Family Households 46
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.08% -0.12%
Households 0.18% -0.26%
Families 0.0% 0.0%
Median Household Income   -0.17%
Per Capita Income   1.74%

South Egremont, MA 01258 - Peer Comparisons by Rank and Percentile

The table below compares 01258 to the other 521 ZIP Codes in Massachusetts by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 500 4th
Population Density # 518 1st
Diversity Index # 425 18th
Median Household Income # 416 20th
Per Capita Income # 297 43rd

Additional comparisons and rankings can be made with a VERY EASY TO USE Massachusetts Census Data Comparison Tool.

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