🇺🇸 United States ZIP Code

STANDARD

66604

Topeka

ZIP Code 66604 is a standard zip code serving Topeka, Topeka, Kansas (KS), in Shawnee County, United States. It has an estimated population of 23,344 with a median household income of $40,550. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Kansas (KS)
County: Shawnee
City: Topeka
Timezone: America/Chicago

Coordinates

Latitude: 39.040500
Longitude: -95.717800

Geographic Details

Land Area: 6.62 mi²
Water Area: 0.01 mi²
Population Density: 3528.0 people per mi² (90th percentile)
Bounding Box: 39.053896°N, 39.015749°S, -95.686056°E, -95.769206°W

With 23,344 residents spread across 6.62 square miles, this area has a population density of 3528.0 people per square mile.

Demographics

23,344

Population

80th percentile

$40,550

Median Income

30th percentile

$98,600

Median Home Value

30th percentile

6.62 mi²

Land Area

The median household income in 66604 is $40,550, and the median home value is $98,600.

Housing

11,539

Total Units

10,450

Occupied Units

90.6%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Topeka, KS.

66601

Topeka

66603

Topeka

66605

Topeka

66606

Topeka

66607

Topeka

66608

Topeka

66609

Topeka

66610

Topeka

66611

Topeka

66612

Topeka

Similar ZIP Codes in Kansas

ZIP codes with similar median household income in Kansas.

67490

Wilson

$41,420

67357

Parsons

$40,610

66945

Hanover

$41,250

66606

Topeka

$39,951

66938

Clyde

$41,343

67207

Wichita

$45,938

66427

Frankfort

$44,250

66720

Chanute

$40,316

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.