South Lancaster, MA 01561 ZIP Code Profile

Related Place Profiles:
South Lancaster, MA

ZIP Code 01561: Basic Data & USPS Preferred City Name

Preferred Name, USPS
South Lancaster, MA 01561

Acceptable Alternative
S Lancaster, MA 01561

Not Acceptable, USPS
So Lancaster, MA 01561

  • ZIP Code Type: PO BOX
  • County: Worcester County
  • Centroid: Latitude 42.441, Longitude -71.69
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 94
  • PO Box Addresses: 331
  • Residential Addresses: 332
    • Multi-Family Addresses: 0
    • Single Family Addresses: 1

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

EXTREMELY LOCAL Demographic Data

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01561 ZIP Code Map

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South Lancaster, MA 01561 Data & Demographics (As of July 1, 2018)


Total Population 122
Population in Households 5
Population in Familes 4
Population in Group Qrtrs 117
Population Density2 4,207
Diversity Index3 58


Median Household Income $100,000
Average Household Income $120,082
Per Capita Income $3,034


Total Housing Units 6 (100%)
Owner Occupied HU 1 (16.7%)
Renter Occupied HU 1 (16.7%)
Vacant Housing Units 4 (66.7%)
Median Home Value $350,000
Average Home Value $350,000


Total Households 2
Average Household Size 2.5
Family Households 1
Average Family Size 4
  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 2.32% 1.12%
Households 0.0% 0.0%
Families 0.0% 0.0%
Median Household Income   4.56%
Per Capita Income   1.53%

South Lancaster, MA 01561 - Peer Comparisons by Rank and Percentile

The table below compares 01561 to the other 521 ZIP Codes in Massachusetts by rank and percentile using July 1, 2018 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 # 505 3rd
Population Density # 100 81st
Diversity Index # 80 85th
Median Household Income # 141 74th
Per Capita Income # 517 1st

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

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