Residential delivery area · Tennessee
ZIP Code 37377: Signal Mountain, TN
ZIP code 37377 uses the postal name Signal Mountain, Tennessee and lies mostly in Hamilton County (50% of its land), reaching into Sequatchie County and Marion County (Census 2020 ZIP-county file). About 17,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $119,636 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Signal Mountain (10%), Lone Oak (8%), Fairmount (5%) and Walden (4%); 72% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Signal Mountain · its only residential ZIP
- County
- Hamilton County (50%); Sequatchie County (46%); Marion County (4%)
- Census places
- Signal Mountain (10%); Lone Oak (8%) census-designated place; Fairmount (5%) census-designated place; Walden (4%)
- Neighborhoods
- Hiddenbrook, Palisades, Signal Terrace GeoNames
- Metro area
- Chattanooga, TN-GA
- House districts
- TN-3 (50%), TN-4 (50%) 119th Congress, by share of land
- State
- Tennessee
- Time zone
- Central
- Land area
- 80.5 sq mi · 214 people per sq mi
Where is ZIP code 37377?
37377 centers on 35.212°, -85.362° and covers 80.5 square miles of land plus 0.1 of water. It borders 6 ZIP codes: 37405, 37415, 37397, 37343, 37379, 37327.
The map draws ZIP code areas only. For the streets inside 37377, 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); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 37377 compare with the rest of Hamilton County?
| Measure | 37377 | In Hamilton County | In TN |
|---|---|---|---|
| People (ACS 2020-2024) | 17,188 | 10th of 31 | 146th of 636 |
| Median household income | $120k | 2nd of 21 | 18th of 425 |
| Median home value | $530k | 2nd of 24 | 20th of 436 |
Its median household income is higher than in 90% of U.S. residential ZIP codes, and it is denser than 63% of all 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 37377?
The 2020 Census counted 17,004 people in 37377; the ACS, which samples households over 2020-2024, estimates 17,188. Between the 2010 and 2020 censuses its population grew 11.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 17,188
- 2020 Census count
- 17,004+11.1% since 2010 (15,310)
- Households
- 6,406
- Median age
- 45.0
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 37377?
Of the 17,188 people the ACS estimates in 37377, 25.8% are under 18 and 23.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (90.8%).
- Under 1825.8%
- 18 to 6450.9%
- 65 and older23.3%
- White, not Hispanic90.8%
- Other or two or more4.7%
- Hispanic or Latino1.9%
- Asian, not Hispanic1.7%
- Black, not Hispanic0.9%
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 37377 earn?
Median household income is $119,636 (ACS 2020-2024), the 2nd highest of the 21 ranked ZIP codes in Hamilton County. It is not measurably different from 2015-2019 ($124,562 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $119,636
- Income per person
- $68,322
- Below the poverty line
- 5.2%
- Unemployed (of the labor force)
- 2.8%
- Adults 25+ with a bachelor's degree
- 59.0%
- Adjusted gross income per tax return, 2022
- $161,9577,960 returns; wages 56% 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 37377?
FHFA's house price index for 37377, built from repeat sales and appraisals of the same homes, rose 104% from 2015 to 2025 and rose 67% from 2020 to 2025, and moved +4.3% in 2025.
- Median home value (owners' estimate)
- $529,500
- Median gross rent
- $1,614
- Homes owned by their occupants
- 85.9%
- Housing units
- 6,762
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 37377?
236 business establishments had a location in this ZIP code in 2023, 22 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance31
- Other services (except public administration)29
- Construction25
- Administrative and support and waste management and remediation services25
- Professional, scientific, and technical services24
- Retail trade22
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 37377?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 37405 | Chattanooga | 18,109 | $81k | 5.8 mi |
| 37415 | Chattanooga | 24,181 | $71k | 7.6 mi |
| 37397 | Whitwell | 10,488 | $55k | 8.8 mi |
| 37343 | Hixson | 45,101 | $82k | 9.0 mi |
| 37379 | Soddy Daisy | 29,430 | $89k | 10.7 mi |
| 37327 | Dunlap | 13,480 | $61k | 14.2 mi |
| 37351 | Lupton City | 281 | $50k | 9.6 mi (near) |
| 37419 | Chattanooga | 5,980 | $75k | 11.6 mi (near) |
| 37450 | Chattanooga | 0 | – | 11.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.