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County ZIP codes · Pennsylvania · FIPS 42087

Mifflin County, PA ZIP Codes

Mifflin County, Pennsylvania has 14 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 11 of the residential ones lie mainly in Mifflin County and 3 mainly in a neighboring county; 5 cross the county line. Median household income ranges from $50,765 in 17066 (Mount Union) to $75,444 in 17063 (Milroy) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Mifflin County?

17002 · Allensville: $70k17004 · Belleville: $65k17009 · Burnham: $73k17029 · Granville: $76k17044 · Lewistown: $60k17051 · McVeytown: $64k17054 · Mattawana: $79k17060 · Mill Creek: $67k17063 · Milroy: $75k17066 · Mount Union: $51k17075 · Newton Hamilton: $71k17084 · Reedsville: $80k17099 · Yeagertown: $62k17841 · McClure: $63k17044170631784117051170041700217060170841706617002 · Allensville: $70k17004 · Belleville: $65k17009 · Burnham: $73k17029 · Granville: $76k17044 · Lewistown: $60k17051 · McVeytown: $64k17054 · Mattawana: $79k17060 · Mill Creek: $67k17063 · Milroy: $75k17066 · Mount Union: $51k17075 · Newton Hamilton: $71k17084 · Reedsville: $80k17099 · Yeagertown: $62k17841 · McClure: $63k17044170631784117051170041700217060170841706617002 · Allensville: $70k17004 · Belleville: $65k17009 · Burnham: $73k17029 · Granville: $76k17044 · Lewistown: $60k17051 · McVeytown: $64k17054 · Mattawana: $79k17060 · Mill Creek: $67k17063 · Milroy: $75k17066 · Mount Union: $51k17075 · Newton Hamilton: $71k17084 · Reedsville: $80k17099 · Yeagertown: $62k17841 · McClure: $63k1704417063178411705117004170601708417066
The residential ZIP codes of Mifflin County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

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 $62,250 and $67,159.

They carry 14 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 14 residential ZIP codes in Mifflin County

11 ZIP codes lie mainly in Mifflin County; 3 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Mifflin County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
17044 Lewistown 20,234 212 $60k $143k 100%
17004 Belleville 5,551 109 $65k $207k 100%
17841 McClure 4,896 67 $63k $166k 54%
17084 Reedsville 4,683 141 $80k $197k 100%
17051 McVeytown 4,352 48 $64k $175k 100%
17063 Milroy 3,177 35 $75k $135k 94%
17009 Burnham 1,765 1,175 $73k $146k 100%
17099 Yeagertown 1,187 825 $62k $66k 100%
17029 Granville 382 277 $76k – 100%
17054 Mattawana 286 427 $79k $254k 100%
17075 Newton Hamilton 125 1,238 $71k $58k 100%

Partly in Mifflin County

Residential ZIP codes mainly in another county that reach at least 1% into Mifflin County, by their share here
In this county
17002 Allensville 451 31 $70k $180k 18%
17066 Mount Union 5,102 174 $51k $123k 18%
17060 Mill Creek 1,248 62 $67k $154k 7%

Download the 14 ZIP codes as CSV

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 Mifflin County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Mifflin County and in the neighboring counties
ZIPIn MifflinElsewhere
1706618%Huntingdon County 82%
1784154%Snyder County 46%
1706394%Snyder County 6%
170607%Huntingdon County 93%
1700218%Huntingdon County 82%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Mifflin County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Mifflin County's ZIP codes use 2 prefixes: 170 and 178.

Three-digit prefixes of Mifflin County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Mifflin County's
PrefixSectional centerHereAll codes
170 Harrisburg, PA (SCF 170) 13 92
178 Harrisburg, PA (SCF 170) 1 60

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.