🇺🇸 United States ZIP Code

STANDARD

37221

Nashville

ZIP Code 37221 is a standard zip code serving Nashville, Nashville, Tennessee (TN), in Davidson County, United States. It has an estimated population of 36,610 with a median household income of $68,473. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Tennessee (TN)
County: Davidson
City: Nashville
Timezone: America/Chicago

Coordinates

Latitude: 36.066200
Longitude: -86.963900

Geographic Details

Land Area: 51.83 mi²
Water Area: 0.11 mi²
Population Density: 706.0 people per mi² (75th percentile)
Bounding Box: 36.117936°N, 35.986344°S, -86.866855°E, -87.054766°W

With 36,610 residents spread across 51.83 square miles, this area has a population density of 706.0 people per square mile.

Demographics

36,610

Population

90th percentile

$68,473

Median Income

80th percentile

$222,100

Median Home Value

75th percentile

51.83 mi²

Land Area

The median household income in 37221 is $68,473, and the median home value is $222,100. This places the area in the top 25% nationally for household income.

Housing

17,249

Total Units

16,351

Occupied Units

94.8%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Nashville, TN.

37201

Nashville

37202

Nashville

37203

Nashville

37204

Nashville

37205

Nashville

37206

Nashville

37207

Nashville

37208

Nashville

37209

Nashville

37210

Nashville

Similar ZIP Codes in Tennessee

ZIP codes with similar median household income in Tennessee.

37122

Mount Juliet

$72,168

37828

Norris

$60,446

37037

Christiana

$67,014

37153

Rockvale

$69,732

37064

Franklin

$73,043

37931

Knoxville

$61,017

38016

Cordova

$66,845

37127

Murfreesboro

$61,051

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.