37681 ZIP Code — Limestone, TN

Washington County, Tennessee

ZIP code 37681 is located in Limestone, Tennessee, within Washington County. It covers approximately 65.20 square miles and serves a population of 6,122 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 423.

About ZIP code 37681

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 $163,300. Owner-occupancy is high at 86%, well above the national average.

Median household income is $49,844. 57% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 33 minutes is near the national average.

College attainment at 15% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (25%) compared to national benchmarks.

Notable community characteristics include disability rates above the national average at 24%.

Overall, ZIP code 37681 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

6,122

population

65.20

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

37681 ZIP code map

Cities in ZIP code 37681

Below are the cities the US Postal Service accepts for ZIP code 37681. Using any city not on this list may result in mail delivery delays.

City	Status
Limestone	Preferred

Nearby ZIP codes

37641 Chuckey (2.5 mi) 37690 Telford (3.9 mi) 37616 Afton (6.6 mi) 37659 Jonesborough (8.9 mi) 37656 Fall Branch (9.7 mi) 37745 Greeneville (11.6 mi) 37615 Johnson City (13.6 mi) 37650 Erwin (14.1 mi) 37604 Johnson City (14.3 mi) 37657 Flag Pond (16.3 mi) 37663 Kingsport (16.6 mi) 37601 Johnson City (17.1 mi)

Demographics updated 05/2026

Population
Total population	6,122
Population density	94 / sq mi
State FIPS	47
County FIPS	179

Geography
Land area	65.20 sq mi
Water area	0.36 sq mi
Latitude	36.2524
Longitude	-82.6265
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	51.2%	51.8%	45.7%
$50k – $100k	31.2%	28.6%	30.9%
$100k – $200k	16.0%	15.8%	18.3%
Over $200k	1.6%	3.9%	5.1%

Demographics & statistics

6,122

Population

People per sq mi

47.9

Median age

$49,844

Median household income

$31,467

Per capita income

$163,300

Median home value

$793

Median monthly rent

86.0%

Home ownership

13.3%

Poverty rate

1.2%

Unemployment

2,380

Housing units

15.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

148

5–9

145

229

10–14

226

165

15–19

162

196

20–24

193

307

25–34

302

309

35–44

304

403

45–54

398

120

55–59

119

175

60–64

172

605

65–74

596

217

75–84

214

119

85+

117

← Male

Female →

Age summary

Group	Count	%
Under 18	1,180	19.3%
18 and over	4,942	80.7%
65 and over	1,868	30.5%
Median age	47.9 years

Race & ethnicity

White 95.1%

Two or more races 2.7%

Hispanic or Latino 1.4%

Black or African American 0.7%

Asian 0.1%

Group	Count	%
White	5,907	95.1%
Two or more races	165	2.7%
Hispanic or Latino	87	1.4%
Black or African American	44	0.7%
Asian	6	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	51.2%	51.8%	45.7%
$50k – $100k	31.2%	28.6%	30.9%
$100k – $200k	16.0%	15.8%	18.3%
Over $200k	1.6%	3.9%	5.1%

Under $10k 2.5%

$10k–$15k 5.9%

$15k–$25k 14.2%

$25k–$35k 11.7%

$35k–$50k 15.9%

$50k–$75k 10.9%

$75k–$100k 14.1%

$100k–$150k 12.1%

$150k–$200k 9.3%

$200k+ 3.4%

Range	% of households
Under $10k	2.5%
$10k–$15k	5.9%
$15k–$25k	14.2%
$25k–$35k	11.7%
$35k–$50k	15.9%
$50k–$75k	10.9%
$75k–$100k	14.1%
$100k–$150k	12.1%
$150k–$200k	9.3%
$200k+	3.4%
Median income	$49,844

Housing

Home values

Under $50k 7.9%

$50k–$100k 17.0%

$100k–$150k 20.2%

$150k–$200k 13.5%

$200k–$300k 22.7%

$300k–$500k 16.0%

$500k–$1M 1.2%

$1M+ 1.5%

Housing overview

Metric	Value
Median home value	$163,300
Median rent / month	$793
Owner occupied	86.0%
Renter occupied	14.0%
Vacant	9.1%
Single-family detached	66.4%
Large apartment buildings	0.6%
Mobile homes	30.1%
Median rooms	5.7
Avg household size (owned)	2.52

Year built

Era	%
2020 or later	0.0%
2010–2019	5.9%
2000–2009	26.2%
1990–1999	18.5%
1980–1989	9.2%
1970–1979	10.1%
1960–1969	9.2%
1950–1959	4.0%
1940–1949	1.8%
1939 or earlier	15.0%

Bedrooms

Size	% of units
No bedroom (studio)	1.5%
1 bedroom	3.4%
2 bedrooms	25.1%
3 bedrooms	53.1%
4 bedrooms	15.6%
5+ bedrooms	1.3%

Vehicles per household

Vehicles	% of households
No vehicle	2.9%
1 vehicle	26.8%
2 vehicles	36.9%
3 or more	33.3%

Heating fuel

Fuel type	%
Utility gas	1.2%
Electricity	84.1%
Propane / LP gas	6.7%
Fuel oil	0.7%
Wood	5.9%
No fuel used	1.5%

Households & families

Household type	Count	%
Married-couple family	1,569	63.3%
Cohabiting couple	116	4.7%
Male householder, no spouse	257	10.4%
Female householder, no spouse	535	21.6%
Households with children under 18	724	29.2%
Households with seniors (65+)	1,198	48.4%
Average household size	2.43

Marital status

Status	Male	Female
Never married	27.2%	16.6%
Married	62.4%	59.9%
Separated	1.6%	0.7%
Widowed	3.5%	15.6%
Divorced	5.4%	7.1%

Education

Less than 9th grade 10.7%

Some HS, no diploma 6.0%

HS graduate 43.3%

Some college, no degree 19.5%

Associate's degree 5.1%

Bachelor's degree 10.2%

Graduate / professional 5.2%

Metric	%
HS diploma or higher	83.3%
Bachelor's or higher	15.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	34	3.2%
Elementary school	595	56.3%
High school	321	30.4%
College / grad school	107	10.1%

Employment

Industry of employment

Education & healthcare 32.6%

Manufacturing 21.1%

Retail trade 11.8%

Professional & management 7.8%

Arts, food & hospitality 6.3%

Other services 5.1%

Agriculture & mining 3.8%

Finance & real estate 3.5%

Construction 2.8%

Transportation & utilities 2.6%

Public administration 1.4%

Wholesale trade 0.6%

Information 0.5%

Occupation

Category	%
Management, business & arts	34.8%
Service	12.0%
Sales & office	26.8%
Natural resources & construction	9.5%
Production & transportation	16.9%

Employment type

Type	%
Private sector	82.2%
Government	11.7%
Self-employed	6.2%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	89.4%
Carpool	6.2%
Public transit	0.0%
Walk	1.2%
Work from home	3.1%
Other means	0.0%
Avg commute (minutes)	32.7

Poverty

All people 13.3%

Under 18 years 9.6%

18 and over 14.2%

Married-couple families 9.2%

Female-led households 13.2%

Income support

Source	% of households
Social Security	57.4%
Retirement income	28.3%
Supplemental Security	5.5%
Cash public assistance	2.0%
Food stamps / SNAP	7.0%

Health indicators

Condition	%
Obesity	36.4%
High blood pressure	40.4%
High cholesterol	38.1%
Diabetes	13.1%
Heart disease	8.0%
Stroke	3.7%
Asthma	10.8%
Arthritis	33.0%
Kidney disease	3.2%
Pulmonary disease	10.1%
Cancer	7.4%

Behavior / access	%
Smoking	24.8%
Binge drinking	13.7%
No physical activity	26.3%
Less than 7 hrs sleep	35.4%
Depression	27.2%
Fair or poor health	18.1%
Poor mental health	17.0%
Poor physical health	12.8%
No health insurance	16.5%
Visited doctor (checkup)	75.3%
Visited dentist	56.4%
Cholesterol screening	90.8%
Teeth loss	19.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	399	8.1%

Disability	%
Any disability	23.7%
Under 18	14.1%
18–64 years	17.6%
65 and over	40.0%

Health insurance coverage

Type	%
Private insurance	61.2%
Public insurance	46.7%
No insurance	8.9%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	5,941	97.0%
Spanish	51	0.9%
Other Indo-European	2	0.0%
Asian & Pacific Islander	49	0.8%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	6,110	99.8%
Born in same state	6,082	99.3%
Born in different state	4,716	77.0%
Foreign born	28	0.5%
Naturalized citizen	12	0.2%
Not a US citizen	12	100.0%

Ancestry

Ancestry	Count	%
French	1,757	28.7%
Arab	858	14%
Italian	716	11.7%

Ancestry	Count	%
English	16	0.3%
Dutch	11	0.2%
German	3	0%

Technology access

Metric	% of households
Computer access	40.5%
Internet access	86.3%

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

Frequently asked questions about ZIP code 37681

What city is ZIP code 37681 in?

ZIP code 37681 is primarily assigned to Limestone, Tennessee.

What county is ZIP code 37681 in?

ZIP code 37681 falls within Washington County, Tennessee.

Does ZIP code 37681 have a large retiree population?

57% of households in ZIP code 37681 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 37681 have an older population?

31% of residents in ZIP code 37681 are 65 or older, above the national average of ~17%.

Is ZIP code 37681 mostly owner-occupied?

86% of occupied units in ZIP code 37681 are owner-occupied, well above the national average.

What is the typical home value in ZIP code 37681?

The median home value in ZIP code 37681 is $163,300.

What timezone is ZIP code 37681 in?

ZIP code 37681 observes the EST timezone.