ZIP Codes of Marion County, TN

Population & People
Population & People
Total Population
17,124
Household Income
Household Income
Median Income
$45,755
Housing
Housing
Total Housing Units
8,052
Business & Economy
Business & Economy
Total Businesses
343
Employment
Employment
Employment Rate
50.01%
Education
Education
Bachelor's Degree+
17.27%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 5 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:423
Timezone:Central (GMT -06:00)
Local Time:2:13:47 PM
Population:17,124 [See All]
FIPS:47115
CBSA:Chattanooga, TN-GA
Land Area:256 sq mi
Water Area:9 sq mi
Coordinates:35.0797, -85.6075
Quick Link:
https://www.zip-codes.com/county/tn-marion.asp
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Sharp income gradient
Wealthiest ZIP earns 5.3× the poorest — $67,826 vs $12,791.

Standout ZIPs in this County


Most Populous
Jasper · 8,607 people
50.3% of county total
Highest Income
Sequatchie · $67,826 median
1.5× county average
Largest Land Area
South Pittsburg · 130.2 sq mi
Spans the most ground
Fastest Growth
Jasper · 20.3% (10-yr)
7,153 → 8,607 residents
Most Educated
Jasper · 21.2% bachelor's+
1,277 of 6,029 adults 25+

Things worth knowing about Marion County


17,124 residents live across 5 ZIPs covering 256 sq mi, served by 5 distinct USPS-recognized cities.

Population moved from 16,307 to 17,124 from 2014 to 2024 — a +5.0% change. 2 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 37374 (Sequatchie, $67,826 median) and poorest ZIP 37340 (Guild, $12,791) are 11.3 miles apart — a 5.3× income gap across local geography.

Median home values vary 1.3× across this county — from $193,600 in 37347 (Jasper) to $256,600 in 37374 (Sequatchie).

Density varies across the county — from 19 people/sq mi in 37340 (Guild) to 147 in 37347 (Jasper).

Educational attainment ranges from 10.1% bachelor's+ in 37340 (Guild) to 21.2% in 37347 (Jasper) — the breadth of educational profiles across the area.

Within Tennessee, this is the #73 most populous of 95 counties and ranks #89 for median household income with the #49 fastest decade growth .

Weighted by population, the typical household earns about $60,954 across the county — reflecting what a typical resident sees, not a simple ZIP average.

17.3% of adults age 25+ hold a bachelor's degree or higher (2,100 of 12,157 reporting).

5 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Marion County


Two counties in one

Median household income spans 5.3× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.

Wealthiest ZIP
Sequatchie
Median income: $67,826
Population: 1,497
Bachelor's+: 19.0%
vs
Poorest ZIP (pop >= 500)
Guild
Median income: $12,791
Population: 288
Bachelor's+: 10.1%
For every $1 of household income in 37340, the typical household in 37374 earns $5.30.

All ZIP Codes in Marion County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
37347JasperStandard8,607$62,83158.720.3%
37380South PittsburgStandard6,688$59,304130.26.5%
37374SequatchieStandard1,497$67,82646.3-32.8%
37340GuildStandard288$12,79115.3-42.5%
37396WhitesideStandard44$26,0235.4-70.5%

Adjacent & Nearby Counties