🇺🇸 United States ZIP Code

STANDARD

18901

Doylestown

ZIP Code 18901 is a standard zip code serving Doylestown, Doylestown, Pennsylvania (PA), in Bucks County, United States. It has an estimated population of 27,598 with a median household income of $84,056. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Pennsylvania (PA)
County: Bucks
City: Doylestown
Timezone: America/New_York

Coordinates

Latitude: 40.305400
Longitude: -75.148900

Geographic Details

Land Area: 20.15 mi²
Water Area: 0.81 mi²
Population Density: 1369.0 people per mi² (80th percentile)
Bounding Box: 40.386369°N, 40.261223°S, -75.087333°E, -75.207523°W

With 27,598 residents spread across 20.15 square miles, this area has a population density of 1369.0 people per square mile.

Demographics

27,598

Population

85th percentile

$84,056

Median Income

90th percentile

$399,700

Median Home Value

90th percentile

20.15 mi²

Land Area

The median household income in 18901 is $84,056, and the median home value is $399,700. This places the area in the top 25% nationally for household income.

Housing

11,351

Total Units

10,812

Occupied Units

95.3%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Doylestown, PA.

18902

Doylestown

Similar ZIP Codes in Pennsylvania

ZIP codes with similar median household income in Pennsylvania.

15668

Murrysville

$92,681

19390

West Grove

$77,462

17538

Landisville

$84,722

19102

Philadelphia

$76,962

15340

Hickory

$74,276

17363

Stewartstown

$74,559

16415

Fairview

$72,113

18976

Warrington

$89,817

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.