🇺🇸 United States ZIP Code

STANDARD

39520

Bay Saint Louis

ZIP Code 39520 is a standard zip code serving Bay Saint Louis, Bay Saint Louis, Mississippi (MS), in Hancock County, United States. It has an estimated population of 14,681 with a median household income of $38,471. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Mississippi (MS)
County: Hancock
City: Bay Saint Louis
Timezone: America/Chicago

Coordinates

Latitude: 30.295600
Longitude: -89.463200

Geographic Details

Land Area: 92.74 mi²
Water Area: 4.11 mi²
Population Density: 158.0 people per mi² (60th percentile)
Bounding Box: 30.363066°N, 30.174103°S, -89.322203°E, -89.592369°W

With 14,681 residents spread across 92.74 square miles, this area has a population density of 158.0 people per square mile.

Demographics

14,681

Population

75th percentile

$38,471

Median Income

25th percentile

$139,600

Median Home Value

55th percentile

92.74 mi²

Land Area

The median household income in 39520 is $38,471, and the median home value is $139,600. This is below the national average for household income.

Housing

7,971

Total Units

5,883

Occupied Units

73.8%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Bay Saint Louis, MS.

39521

Bay Saint Louis

Similar ZIP Codes in Mississippi

ZIP codes with similar median household income in Mississippi.

39345

Newton

$40,833

39572

Pearlington

$36,429

39470

Poplarville

$38,561

39059

Crystal Springs

$37,068

38663

Ripley

$35,107

39478

Sandy Hook

$36,964

39466

Picayune

$40,047

39776

Woodland

$33,606

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.