County ZIP codes · Tennessee · FIPS 47009
Blount County, TN ZIP Codes
Blount County, Tennessee has 13 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 12 residential and 1 for PO boxes or a single organization. 10 of the residential ones lie mainly in Blount County and 2 mainly in a neighboring county; 5 cross the county line. Median household income ranges from $66,132 in 37701 (Alcoa) to $88,983 in 37742 (Greenback) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Blount County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $69,075 and $82,009.
They carry 10 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 12 residential ZIP codes in Blount County
10 ZIP codes lie mainly in Blount County; 2 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 37803 | Maryville | 33,822 | 385 | $83k | $356k | 100% |
| 37801 | Maryville | 28,090 | 405 | $74k | $320k | 88% |
| 37804 | Maryville | 27,382 | 786 | $79k | $273k | 100% |
| 37777 | Louisville | 12,877 | 392 | $76k | $346k | 100% |
| 37701 | Alcoa | 10,247 | 954 | $66k | $281k | 100% |
| 37737 | Friendsville | 7,081 | 265 | $82k | $321k | 94% |
| 37886 | Walland | 3,670 | 87 | $82k | $262k | 100% |
| 37853 | Rockford | 3,365 | 201 | $69k | $222k | 91% |
| 37882 | Townsend | 2,914 | 16 | $69k | $345k | 100% |
| 37878 | Tallassee | 761 | 29 | $55k | $270k | 100% |
Partly in Blount County
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
5 ZIP codes of Blount County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Blount | Elsewhere |
|---|---|---|
| 37801 | 88% | Monroe County12% |
| 37865 | 31% | Sevier County69% |
| 37737 | 94% | Loudon County6% |
| 37742 | 32% | Loudon County68% |
| 37853 | 91% | Knox County9% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 37802 | Maryville |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Blount County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Blount County's ZIP codes use 2 prefixes: 377 and 378.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.