Residential delivery area · Tennessee
ZIP Code 37840: Oliver Springs, TN
ZIP code 37840 uses the postal name Oliver Springs, Tennessee and lies mostly in Morgan County (44% of its land), reaching into Anderson County and Roane County (Census 2020 ZIP-county file). About 10,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $75,881 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Coalfield (13%) and Oliver Springs (7%); 80% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Oliver Springs · its only residential ZIP
- County
- Morgan County (44%); Anderson County (37%); Roane County (19%)
- Census places
- Coalfield (13%) census-designated place; Oliver Springs (7%)
- Metro area
- Knoxville, TN
- House district
- TN-3 119th Congress
- State
- Tennessee
- Time zone
- Eastern
- Land area
- 80.7 sq mi · 124 people per sq mi
Where is ZIP code 37840?
37840 centers on 36.068°, -84.370° and covers 80.7 square miles of land. It borders 8 ZIP codes: 37719, 37845, 37710, 37830, 37716, 37748, 37887, 37770.
The map draws ZIP code areas only. For the streets inside 37840, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 37840 compare with the rest of Morgan County?
| Measure | 37840 | In Morgan County | In TN |
|---|---|---|---|
| People (ACS 2020-2024) | 10,004 | 3rd of 12 | 208th of 636 |
| Median household income | $76k | not ranked | not ranked |
| Median home value | $204k | 1st of 6 | 274th of 436 |
37840's median household income is not ranked: its 90% margin of error (±$23,516) is more than a quarter of the figure ($75,881). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 57% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 37840?
The 2020 Census counted 9,330 people in 37840; the ACS, which samples households over 2020-2024, estimates 10,004. Between the 2010 and 2020 censuses its population fell 6.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 10,004±1,222 (90% margin)
- 2020 Census count
- 9,330−6.9% since 2010 (10,021)
- Households
- 3,789
- Median age
- 43.0
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 37840?
Of the 10,004 people the ACS estimates in 37840, 23.0% are under 18 and 22.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (94.9%).
- Under 1823.0%
- 18 to 6454.9%
- 65 and older22.0%
- White, not Hispanic94.9%
- Other or two or more4.9%
- Hispanic or Latino0.2%
- Black, not Hispanic0.0%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 37840 earn?
Median household income is $75,881 (ACS 2020-2024). It is not measurably different from 2015-2019 ($61,537 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $75,881±$23,516
- Income per person
- $39,417
- Below the poverty line
- 12.7%
- Unemployed (of the labor force)
- 6.4%
- Adults 25+ with a bachelor's degree
- 15.5%
- Adjusted gross income per tax return, 2022
- $58,7604,070 returns; wages 76% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 37840?
FHFA's house price index for 37840, built from repeat sales and appraisals of the same homes, rose 139% from 2015 to 2025 and rose 83% from 2020 to 2025, and moved +1.6% in 2025.
- Median home value (owners' estimate)
- $203,600
- Median gross rent
- $682
- Homes owned by their occupants
- 79.5%
- Housing units
- 4,006
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 37840?
108 business establishments had a location in this ZIP code in 2023, 13 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade26
- Other services (except public administration)19
- Construction16
- Health care and social assistance9
- Accommodation and food services7
- Wholesale trade6
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 37840?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 37719 | Coalfield | 45 | – | 4.6 mi |
| 37845 | Petros | 171 | $16k | 5.1 mi |
| 37710 | Briceville | 1,083 | $28k | 6.9 mi |
| 37830 | Oak Ridge | 33,038 | $72k | 8.3 mi |
| 37716 | Clinton | 27,425 | $65k | 11.5 mi |
| 37748 | Harriman | 17,575 | $65k | 11.8 mi |
| 37887 | Wartburg | 6,555 | $65k | 13.7 mi |
| 37770 | Lancing | 2,756 | $48k | 16.3 mi |
| 37714 | Caryville | 4,421 | $56k | 13.0 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.