County ZIP codes · Maryland · FIPS 24023
Garrett County, MD ZIP Codes
Garrett County, Maryland 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. 11 of the residential ones lie mainly in Garrett County and 1 mainly in a neighboring county; 4 cross the county line. Median household income ranges from $57,708 in 21539 (Lonaconing) to $64,921 in 21550 (Oakland) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Garrett 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 $59,852 and $64,194.
They carry 12 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 12 residential ZIP codes in Garrett County
11 ZIP codes lie mainly in Garrett County; 1 more reaches into it from a neighboring county and follows the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 21550 | Oakland | 13,691 | 67 | $65k | $233k | 100% |
| 21536 | Grantsville | 3,833 | 39 | $64k | $201k | 100% |
| 21562 | Westernport | 3,032 | 105 | $48k | $99k | 50% |
| 21531 | Friendsville | 2,487 | 41 | $64k | $180k | 100% |
| 21561 | Swanton | 2,412 | 24 | $74k | $329k | 100% |
| 21539 | Lonaconing | 1,975 | 53 | $58k | $130k | 57% |
| 21520 | Accident | 1,918 | 34 | $60k | $299k | 100% |
| 21521 | Barton | 1,400 | 59 | $64k | $108k | 62% |
| 21541 | McHenry | 1,335 | 58 | $83k | $343k | 100% |
| 21538 | Kitzmiller | 678 | 38 | $61k | – | 100% |
| 21523 | Bloomington | 150 | 201 | $59k | $98k | 100% |
Partly in Garrett County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 21532 | Frostburg | 13,647 | 184 | $64k | $182k | 46% |
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?
4 ZIP codes of Garrett County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Garrett | Elsewhere |
|---|---|---|
| 21532 | 46% | Allegany County 54% |
| 21562 | 50% | Allegany County 50% |
| 21539 | 57% | Allegany County 43% |
| 21521 | 62% | Allegany County 38% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 21522 | Bittinger |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Garrett County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Garrett County starts with 215.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 215 | Baltimore, MD (SCF 212) | 13 | 30 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.