37321 ZIP Code — Dayton, TN

Rhea County, Tennessee

ZIP code 37321 is located in Dayton, Tennessee, within Rhea County. It covers approximately 114.01 square miles and serves a population of 20,672 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 423.

About ZIP code 37321

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $152,000. Owner-occupancy sits near the national average at 70%.

Median household income is $56,844. SNAP benefit usage at 19% of households reflects economic stress in the area. 38% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is production, transportation, and material moving, with manufacturing as the leading industry. The average commute of 26 minutes is near the national average.

College attainment at 17% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (27%) compared to national benchmarks.

Overall, ZIP code 37321 reflects a community defined by a trades-oriented workforce, a significant Social Security-dependent population, and elevated reliance on food assistance.

20,672

population

114.01

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

37321 ZIP code map

Cities in ZIP code 37321

Below are the cities the US Postal Service accepts for ZIP code 37321. Using any city not on this list may result in mail delivery delays.

City	Status
Dayton	Preferred

Nearby ZIP codes

37332 Evensville (8.4 mi) 37373 Sale Creek (8.7 mi) 37338 Graysville (9.3 mi) 37322 Decatur (12 mi) 37367 Pikeville (12 mi) 37308 Birchwood (12.2 mi) 37304 Bakewell (12.3 mi) 37381 Spring City (15.5 mi) 37336 Georgetown (15.5 mi) 37379 Soddy Daisy (16.3 mi)

Demographics updated 05/2026

Population
Total population	20,672
Population density	181 / sq mi
State FIPS	47
County FIPS	143

Geography
Land area	114.01 sq mi
Water area	5.94 sq mi
Latitude	35.5059
Longitude	-85.0397
Timezone	Eastern (ET)
Area code	423

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	55.8%	55.1%	45.7%
$50k – $100k	29.7%	28.1%	30.9%
$100k – $200k	12.6%	14.8%	18.3%
Over $200k	1.9%	2.0%	5.1%

Demographics & statistics

20,672

Population

181

People per sq mi

37.3

Median age

$56,844

Median household income

$25,060

Per capita income

$152,000

Median home value

$775

Median monthly rent

70.2%

Home ownership

16.0%

Poverty rate

8.1%

Unemployment

6,521

Housing units

17.1%

Bachelor's or higher

Age distribution

Male Female

650

Under 5

654

610

5–9

614

714

10–14

719

742

15–19

747

853

20–24

859

1,272

25–34

1,279

1,270

35–44

1,277

1,203

45–54

1,210

577

55–59

580

670

60–64

674

1,079

65–74

1,085

560

75–84

564

105

85+

105

← Male

Female →

Age summary

Group	Count	%
Under 18	4,889	23.7%
18 and over	15,783	76.3%
65 and over	3,498	16.9%
Median age	37.3 years

Race & ethnicity

White 82.5%

Hispanic or Latino 6.3%

Two or more races 4.9%

Other race 3.5%

Asian 1.4%

Black or African American 1.4%

American Indian / Alaska Native 0.1%

Group	Count	%
White	18,191	82.5%
Hispanic or Latino	1,382	6.3%
Two or more races	1,073	4.9%
Other race	764	3.5%
Asian	312	1.4%
Black or African American	299	1.4%
American Indian / Alaska Native	33	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	55.8%	55.1%	45.7%
$50k – $100k	29.7%	28.1%	30.9%
$100k – $200k	12.6%	14.8%	18.3%
Over $200k	1.9%	2.0%	5.1%

Under $10k 6.0%

$10k–$15k 5.4%

$15k–$25k 6.8%

$25k–$35k 8.2%

$35k–$50k 13.9%

$50k–$75k 24.2%

$75k–$100k 16.1%

$100k–$150k 12.5%

$150k–$200k 4.0%

$200k+ 2.9%

Range	% of households
Under $10k	6.0%
$10k–$15k	5.4%
$15k–$25k	6.8%
$25k–$35k	8.2%
$35k–$50k	13.9%
$50k–$75k	24.2%
$75k–$100k	16.1%
$100k–$150k	12.5%
$150k–$200k	4.0%
$200k+	2.9%
Median income	$56,844

Housing

Home values

Under $50k 9.8%

$50k–$100k 21.0%

$100k–$150k 18.4%

$150k–$200k 17.0%

$200k–$300k 22.2%

$300k–$500k 8.3%

$500k–$1M 3.2%

$1M+ 0.3%

Housing overview

Metric	Value
Median home value	$152,000
Median rent / month	$775
Owner occupied	70.2%
Renter occupied	29.8%
Vacant	13.8%
Single-family detached	66.5%
Large apartment buildings	0.6%
Mobile homes	18.8%
Median rooms	5.5
Avg household size (owned)	2.63

Year built

Era	%
2020 or later	0.3%
2010–2019	10.7%
2000–2009	23.9%
1990–1999	17.5%
1980–1989	13.3%
1970–1979	15.7%
1960–1969	7.6%
1950–1959	4.5%
1940–1949	3.1%
1939 or earlier	3.3%

Bedrooms

Size	% of units
No bedroom (studio)	1.3%
1 bedroom	2.8%
2 bedrooms	23.8%
3 bedrooms	53.9%
4 bedrooms	16.9%
5+ bedrooms	1.3%

Vehicles per household

Vehicles	% of households
No vehicle	7.2%
1 vehicle	29.9%
2 vehicles	32.0%
3 or more	30.9%

Heating fuel

Fuel type	%
Utility gas	45.8%
Electricity	49.9%
Propane / LP gas	1.6%
Fuel oil	0.3%
Wood	1.7%
No fuel used	0.7%

Households & families

Household type	Count	%
Married-couple family	4,031	53.3%
Cohabiting couple	458	6.1%
Male householder, no spouse	1,075	14.2%
Female householder, no spouse	1,993	26.4%
Households with children under 18	2,514	33.3%
Households with seniors (65+)	2,504	33.1%
Average household size	2.65

Marital status

Status	Male	Female
Never married	31.6%	20.8%
Married	53.4%	51.1%
Separated	0.9%	3.8%
Widowed	2.4%	11.0%
Divorced	11.7%	13.3%

Education

Less than 9th grade 4.9%

Some HS, no diploma 11.7%

HS graduate 42.3%

Some college, no degree 18.4%

Associate's degree 5.8%

Bachelor's degree 11.4%

Graduate / professional 5.7%

Metric	%
HS diploma or higher	83.5%
Bachelor's or higher	17.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	276	5.5%
Kindergarten	276	5.5%
Elementary school	2,006	39.8%
High school	1,396	27.7%
College / grad school	1,087	21.6%

Employment

Industry of employment

Manufacturing 27.4%

Education & healthcare 18.7%

Retail trade 9.7%

Construction 8.5%

Arts, food & hospitality 6.7%

Transportation & utilities 5.9%

Professional & management 5.5%

Other services 4.7%

Public administration 4.3%

Finance & real estate 4.0%

Agriculture & mining 2.9%

Wholesale trade 1.6%

Information 0.2%

Occupation

Category	%
Management, business & arts	23.2%
Service	16.4%
Sales & office	19.2%
Natural resources & construction	11.5%
Production & transportation	29.7%

Employment type

Type	%
Private sector	80.7%
Government	15.2%
Self-employed	4.1%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	85.3%
Carpool	10.2%
Public transit	0.0%
Walk	1.0%
Work from home	2.9%
Other means	0.5%
Avg commute (minutes)	25.7

Poverty

All people 16.0%

Under 18 years 25.0%

18 and over 13.1%

Married-couple families 3.4%

Female-led households 29.9%

Income support

Source	% of households
Social Security	37.7%
Retirement income	25.8%
Supplemental Security	7.5%
Cash public assistance	0.7%
Food stamps / SNAP	18.6%

Health indicators

Condition	%
Obesity	38.4%
High blood pressure	39.1%
High cholesterol	35.9%
Diabetes	13.2%
Heart disease	8.2%
Stroke	4.1%
Asthma	11.3%
Arthritis	30.6%
Kidney disease	3.5%
Pulmonary disease	11.2%
Cancer	6.6%

Behavior / access	%
Smoking	27.1%
Binge drinking	13.9%
No physical activity	29.0%
Less than 7 hrs sleep	35.0%
Depression	28.9%
Fair or poor health	20.9%
Poor mental health	19.1%
Poor physical health	14.1%
No health insurance	19.7%
Visited doctor (checkup)	73.5%
Visited dentist	50.4%
Cholesterol screening	87.5%
Teeth loss	23.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,190	7.5%

Disability	%
Any disability	19.6%
Under 18	8.7%
18–64 years	17.0%
65 and over	44.7%

Health insurance coverage

Type	%
Private insurance	61.8%
Public insurance	40.0%
No insurance	11.1%
Uninsured under 19	4.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	19,368	93.7%
Spanish	692	3.6%
Other Indo-European	558	2.9%
Asian & Pacific Islander	118	0.6%
Other languages	16	0.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	19,868	96.1%
Born in same state	19,767	95.6%
Born in different state	14,290	69.1%
Foreign born	101	0.5%
Naturalized citizen	804	3.9%
Not a US citizen	178	22.1%

Ancestry

Ancestry	Count	%
Italian	2,939	14.2%
French	2,191	10.6%
Arab	2,176	10.5%
English	439	2.1%

Ancestry	Count	%
German	30	0.1%
Dutch	25	0.1%
Irish	8	0%
Polish	4	0%

Technology access

Metric	% of households
Computer access	36.6%
Internet access	94.5%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 37321

What city is ZIP code 37321 in?

ZIP code 37321 is primarily assigned to Dayton, Tennessee.

What county is ZIP code 37321 in?

ZIP code 37321 falls within Rhea County, Tennessee.

What is the poverty rate in ZIP code 37321?

16% of residents in ZIP code 37321 live below the poverty line, above the national average.

Does ZIP code 37321 have a large retiree population?

38% of households in ZIP code 37321 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 37321?

The median home value in ZIP code 37321 is $152,000.

What is the population of ZIP code 37321?

ZIP code 37321 has an estimated population of 20,672 residents, with a density of 181 people per square mile.

What timezone is ZIP code 37321 in?

ZIP code 37321 observes the EST timezone.