County ZIP codes · Pennsylvania · FIPS 42013
Blair County, PA ZIP Codes
Blair County, Pennsylvania has 21 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 20 residential and 1 for PO boxes or a single organization. 15 of the residential ones lie mainly in Blair County and 5 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $52,609 in 16617 (Bellwood) to $81,540 in 16648 (Hollidaysburg) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Blair 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 $55,582 and $69,760.
They carry 19 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 20 residential ZIP codes in Blair County
15 ZIP codes lie mainly in Blair County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 16601 | Altoona | 33,515 | 395 | $58k | $147k | 100% |
| 16602 | Altoona | 26,352 | 1,795 | $55k | $126k | 100% |
| 16648 | Hollidaysburg | 14,904 | 248 | $82k | $220k | 100% |
| 16686 | Tyrone | 13,427 | 91 | $69k | $173k | 68% |
| 16635 | Duncansville | 12,003 | 212 | $70k | $192k | 100% |
| 16662 | Martinsburg | 6,069 | 113 | $74k | $221k | 85% |
| 16673 | Roaring Spring | 5,204 | 151 | $71k | $160k | 62% |
| 16693 | Williamsburg | 3,795 | 49 | $63k | $154k | 100% |
| 16625 | Claysburg | 3,147 | 98 | $55k | $164k | 58% |
| 16617 | Bellwood | 2,392 | 1,616 | $53k | $146k | 100% |
| 16637 | East Freedom | 2,345 | 119 | $56k | $120k | 100% |
| 16682 | Sproul | 402 | 5,221 | $75k | – | 100% |
| 16665 | Newry | 253 | 542 | $66k | $267k | 100% |
| 16684 | Tipton | 108 | 2,455 | $34k | – | 100% |
| 16631 | Curryville | 57 | 109 | – | $238k | 100% |
Partly in Blair County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 16613 | Ashville | 1,647 | 53 | $74k | $159k | 32% |
| 15946 | Portage | 6,561 | 135 | $56k | $117k | 21% |
| 16641 | Gallitzin | 2,348 | 182 | $65k | $117k | 7% |
| 16636 | Dysart | 808 | 29 | $90k | $172k | 5% |
| 16655 | Imler | 1,427 | 44 | $67k | $163k | 2% |
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?
9 ZIP codes of Blair County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Blair | Elsewhere |
|---|---|---|
| 16686 | 68% | Huntingdon County 25%; Centre County 7% |
| 15946 | 21% | Cambria County 69%; Bedford County 9% |
| 16662 | 85% | Bedford County 15% |
| 16673 | 62% | Bedford County 38% |
| 16625 | 58% | Bedford County 42% |
| 16641 | 7% | Cambria County 93% |
| 16613 | 32% | Cambria County 68% |
| 16655 | 2% | Bedford County 98% |
| 16636 | 5% | Cambria County 95% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 16603 | Altoona |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Blair County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Blair County's ZIP codes use 2 prefixes: 159 and 166.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.