🇺🇸 United States ZIP Code

STANDARD

05155

South Londonderry

ZIP Code 05155 is a standard zip code serving South Londonderry, South Londonderry, Vermont (VT), in Windham County, United States. It has an estimated population of 828 with a median household income of $45,643. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Vermont (VT)
County: Windham
City: South Londonderry
Timezone: America/New_York

Coordinates

Latitude: 43.169900
Longitude: -72.851500

Geographic Details

Land Area: 41.52 mi²
Water Area: 0.25 mi²
Population Density: 20.0 people per mi² (20th percentile)
Bounding Box: 43.227849°N, 43.042659°S, -72.779943°E, -73.000540°W

With 828 residents spread across 41.52 square miles, this area has a population density of 20.0 people per square mile.

Demographics

828

Population

20th percentile

$45,643

Median Income

40th percentile

$281,000

Median Home Value

85th percentile

41.52 mi²

Land Area

The median household income in 05155 is $45,643, and the median home value is $281,000.

Housing

1,798

Total Units

378

Occupied Units

21.0%

Occupancy Rate

Similar ZIP Codes in Vermont

ZIP codes with similar median household income in Vermont.

05033

Bradford

$43,021

05046

Groton

$45,685

05051

Newbury

$47,950

05060

Randolph

$44,869

05068

South Royalton

$38,894

05089

Windsor

$46,097

05143

Chester

$46,708

05149

Ludlow

$40,625

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.