Zip Code 37321
Dayton, Tennessee — Rhea County
📍 ZIP code 37321 is in Dayton, Rhea County, Tennessee.
ZIP code 37321 is located in Dayton, Rhea County, Tennessee. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 20,670. The area code for ZIP code 37321 is 423.
Quick Answer
Zip code 37321 is in Dayton, Tennessee (Rhea County). It has a population of 20,670, median household income of $59,182, and median home value of $168,000.
Population
20,670
Income
$59,182
Home Value
$168,000
Climate
88°F / 28°F
About Zip Code 37321
Zip code 37321 is located in Dayton, Tennessee, within Rhea County. Home to approximately 20,670 residents, this area sits at an elevation of 690 ft and falls within the Central (CST/CDT) timezone. The local area code is 423.
The median household income is $59,182 per year, which is below the national median of $70,784. Homes in this zip code have a median value of $168,000, and the cost of living index is 63 (37% below the national average of 100).
Summers average a high of 88°F while winters drop to 28°F. The area receives about 59 in of rain and 2 in of snow annually. The zip code covers 113 square miles of land area and 5.9 square miles of water.
Key Statistics
20,670
$59,182
$168,000
Central (CST/CDT)
423
690 ft
113 sq mi
38.7
8,947
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Compare With Nearby Zip Codes
| Metric | 37321 | 37332 | 37373 | 37322 | 37308 | 37338 |
|---|---|---|---|---|---|---|
| City | Dayton, TN | Evensville, TN | Sale Creek, TN | Decatur, TN | Birchwood, TN | Graysville, TN |
| Population | 20,670 | 2,123 | 2,949 | 8,509 | 2,957 | 2,991 |
| Median Income | $59,182 | $46,341 | $59,306 | $53,965 | $69,398 | $38,111 |
| Home Value | $168,000 | $188,500 | $295,800 | $184,800 | $238,200 | $121,900 |
| Cost of Living | 63 | 60 | 87 | 64 | 82 | 60 |
| Median Age | 38.7 | 38 | 48.9 | 45.5 | 37.3 | 47.2 |
Cost of Living
100 = National Average. Dayton's cost of living is 37% below the national average.
vs. State Avg
Below
Affordability
Very Affordable
Income-to-Home
2.8x
Demographics
Zip code 37321 has a population of 20,670 people with a median age of 38.7. There are 8,947 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Dayton (37321) population trend from 2010 to 2024
↑ 70.4%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
88°F
28°F
59 in
2 in
Dayton experiences warm summers with average highs around 88°F. Winters are cool with lows averaging 28°F. The area receives about 2 in of snow per year.
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Housing & Economy
Median Home Value
$168,000
Median Household Income
$59,182
With 8,947 housing units across 113 square miles, 37321 has a housing density of 79 units per square mile. The home price-to-income ratio is 2.8x.
Location & Geography
Latitude
35.5021°
Longitude
-85.0080°
Land Area
113 sq mi
Water Area
5.9 sq mi
Nearby Zip Codes
Zip codes closest to 37321 (Dayton, TN) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 37321's $59,182. A way to compare Dayton to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 37321 (Dayton, TN). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Dayton, Tennessee?
Dayton, Tennessee uses zip code 37321.
What county is zip code 37321 in?
Zip code 37321 is located in Rhea County, Tennessee.
What is the population of zip code 37321?
The population of zip code 37321 is 20,670 with a median age of 38.7.
Is 37321 in Dayton, Tennessee?
Yes, zip code 37321 is in Dayton, Rhea County, Tennessee. The area code is 423.
Frequently Asked Questions
What city is zip code 37321 in?
Zip code 37321 is in Dayton, Tennessee. It is part of Rhea County and uses the Central (CST/CDT) timezone.
What is zip code 37321?
Zip code 37321 is a U.S. postal code in Dayton, Tennessee (Rhea County). It has a population of 20,670 and covers 113 square miles.
What is the population of zip code 37321?
The population of zip code 37321 (Dayton, TN) is 20,670 with a median age of 38.7. There are approximately 8,947 housing units in this area.
What is the median income in zip code 37321?
The median household income in zip code 37321 (Dayton, TN) is $59,182 per year. The cost of living index is 63 (100 = national average).
What is the average home price in zip code 37321?
The median home value in zip code 37321 (Dayton, TN) is $168,000. The cost of living index is 63 compared to the national average of 100.
What county is zip code 37321 in?
Zip code 37321 is located in Rhea County, Tennessee. The primary city is Dayton.
What is the area code for zip code 37321?
Zip code 37321 in Dayton, TN uses area code 423. It is located in the Central (CST/CDT) timezone.
Is zip code 37321 a good place to live?
Zip code 37321 (Dayton, TN) has a cost of living index of 63 (100 = national average), a median household income of $59,182, and median home values of $168,000. The median age is 38.7. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 37321?
The cost of living index for zip code 37321 (Dayton, TN) is 63, where 100 represents the national average. This area is below the national average. Median home value: $168,000.
What schools serve zip code 37321?
Zip code 37321 in Dayton, Tennessee is served by the local school district of Rhea County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.