🇺🇸 United States ZIP Code

STANDARD

30066

Marietta

ZIP Code 30066 is a standard zip code serving Marietta, Marietta, Georgia (GA), in Cobb County, United States. It has an estimated population of 52,936 with a median household income of $77,661. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Georgia (GA)
County: Cobb
City: Marietta
Timezone: America/New_York

Coordinates

Latitude: 34.037800
Longitude: -84.503800

Geographic Details

Land Area: 27.24 mi²
Water Area: 0.27 mi²
Population Density: 1943.0 people per mi² (85th percentile)
Bounding Box: 34.075998°N, 33.972813°S, -84.423353°E, -84.569574°W

With 52,936 residents spread across 27.24 square miles, this area has a population density of 1943.0 people per square mile.

Demographics

52,936

Population

95th percentile

$77,661

Median Income

85th percentile

$198,500

Median Home Value

70th percentile

27.24 mi²

Land Area

The median household income in 30066 is $77,661, and the median home value is $198,500. This places the area in the top 25% nationally for household income.

Housing

20,730

Total Units

19,517

Occupied Units

94.1%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Marietta, GA.

30006

Marietta

30007

Marietta

30008

Marietta

30060

Marietta

30061

Marietta

30062

Marietta

30063

Marietta

30064

Marietta

30065

Marietta

30067

Marietta

Similar ZIP Codes in Georgia

ZIP codes with similar median household income in Georgia.

30028

Cumming

$66,724

30328

Atlanta

$73,434

30338

Atlanta

$82,765

30019

Dacula

$77,872

30126

Mableton

$67,955

30078

Snellville

$67,018

30269

Peachtree City

$87,159

30178

Taylorsville

$67,444

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.