Residential delivery area · Tennessee
ZIP Code 37308: Birchwood, TN
ZIP code 37308 uses the postal name Birchwood, Tennessee and lies mostly in Hamilton County (63% of its land) with the rest in Meigs County (Census 2020 ZIP-county file). About 3,200 people live there (Census Bureau, ACS 2020-2024). Median household income is $80,394 (Census Bureau, ACS 2020-2024). Its land lies outside any incorporated or census-designated place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Birchwood · its only residential ZIP
- County
- Hamilton County (63%); Meigs County (37%)
- Metro area
- Chattanooga, TN-GA
- House districts
- TN-3 (63%), TN-4 (37%) 119th Congress, by share of land
- State
- Tennessee
- Time zone
- Eastern
- Land area
- 37.0 sq mi · 86 people per sq mi
Where is ZIP code 37308?
37308 centers on 35.343°, -84.994° and covers 37.0 square miles of land plus 5.7 of water. It borders 7 ZIP codes: 37336, 37373, 37341, 37321, 37379, 37322, 37363.
The map draws ZIP code areas only. For the streets inside 37308, 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 37308 compare with the rest of Hamilton County?
| Measure | 37308 | In Hamilton County | In TN |
|---|---|---|---|
| People (ACS 2020-2024) | 3,188 | 27th of 31 | 381st of 636 |
| Median household income | $80k | 9th of 21 | 103rd of 425 |
| Median home value | $253k | 18th of 24 | 180th of 436 |
Its median household income is higher than in 62% of U.S. residential ZIP codes, and it is denser than 51% 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 37308?
The 2020 Census counted 2,825 people in 37308; the ACS, which samples households over 2020-2024, estimates 3,188. Between the 2010 and 2020 censuses its population grew 1.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 3,188±638 (90% margin)
- 2020 Census count
- 2,825+1.9% since 2010 (2,772)
- Households
- 1,189
- Median age
- 38.2
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 37308?
Of the 3,188 people the ACS estimates in 37308, 25.3% are under 18 and 13.1% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (93.1%).
- Under 1825.3%
- 18 to 6461.6%
- 65 and older13.1%
- White, not Hispanic93.1%
- Other or two or more4.7%
- Black, not Hispanic1.4%
- Hispanic or Latino0.8%
- 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 37308 earn?
Median household income is $80,394 (ACS 2020-2024), the 9th highest of the 21 ranked ZIP codes in Hamilton County. It is not measurably different from 2015-2019 ($71,099 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $80,394±$12,906
- Income per person
- $35,403
- Below the poverty line
- 5.1%
- Unemployed (of the labor force)
- 1.8%
- Adults 25+ with a bachelor's degree
- 16.9%
- Adjusted gross income per tax return, 2022
- $67,5271,290 returns; wages 77% 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 37308?
FHFA's house price index for 37308, built from repeat sales and appraisals of the same homes, rose 106% from 2015 to 2025 and rose 68% from 2020 to 2025, and moved +10.4% in 2025.
- Median home value (owners' estimate)
- $253,100
- Median gross rent
- $807
- Homes owned by their occupants
- 88.5%
- Housing units
- 1,363
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 37308?
13 business establishments had a location in this ZIP code in 2023, 3 fewer than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction5
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 37308?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 37336 | Georgetown | 4,483 | $67k | 4.2 mi |
| 37373 | Sale Creek | 3,273 | $55k | 7.2 mi |
| 37341 | Harrison | 15,591 | $92k | 9.6 mi |
| 37321 | Dayton | 21,084 | $55k | 11.0 mi |
| 37379 | Soddy Daisy | 29,430 | $89k | 12.0 mi |
| 37322 | Decatur | 9,101 | $58k | 14.5 mi |
| 37363 | Ooltewah | 42,093 | $97k | 15.7 mi |
| 37312 | Cleveland | 36,669 | $78k | 10.5 mi (near) |
| 37338 | Graysville | 3,309 | $50k | 13.6 mi (near) |
| 37309 | Calhoun | 2,136 | $64k | 14.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.