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Mifflin County, Pennsylvania facts for kids

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Mifflin County
former Mifflin County Courthouse
former Mifflin County Courthouse
Map of Pennsylvania highlighting Mifflin County
Location within the U.S. state of Pennsylvania
Map of the United States highlighting Pennsylvania
Pennsylvania's location within the U.S.
Country  United States
State  Pennsylvania
Founded 19 September 1789
Named for Thomas Mifflin
Seat Lewistown
Largest borough Lewistown
 • Total 415 sq mi (1,070 km2)
 • Land 411 sq mi (1,060 km2)
 • Water 3.7 sq mi (10 km2)  0.9%%
 • Estimate 
 • Density 112.5/sq mi (43.4/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional district 12th

Mifflin County is a county in the U.S. state of Pennsylvania. As of the 2010 United States Census, the population was 46,682. Its county seat is Lewistown. The county was created on September 19, 1789, from parts of Cumberland County and Northumberland County. It was named for Thomas Mifflin, the first Governor of Pennsylvania.

Mifflin County comprises the Lewistown, PA Micropolitan Statistical Area.


According to the U.S. Census Bureau, the county has a total area of 415 square miles (1,070 km2), of which 411 square miles (1,060 km2) is land and 3.7 square miles (9.6 km2) (0.9%) is water.

Mifflin County is located in, and has its boundaries defined by, the Ridge-and Valley Appalachian Mountains of Pennsylvania. US Route 322, a major divided highway, connects the county to the rest of the state on its route between Harrisburg and State College. US Route 522 also connects the county to the rest of the state on its route between Selinsgrove and Mount Union.

Adjacent counties

Major Highways

  • US 22
  • US 522
  • US 322
  • PA 103
  • PA 333
  • PA 655


Historical population
Census Pop.
1790 7,562
1800 13,609 80.0%
1810 12,132 −10.9%
1820 16,618 37.0%
1830 21,690 30.5%
1840 13,092 −39.6%
1850 14,980 14.4%
1860 16,340 9.1%
1870 17,508 7.1%
1880 19,577 11.8%
1890 19,996 2.1%
1900 23,160 15.8%
1910 27,785 20.0%
1920 31,439 13.2%
1930 40,335 28.3%
1940 42,993 6.6%
1950 43,691 1.6%
1960 44,348 1.5%
1970 45,268 2.1%
1980 46,908 3.6%
1990 46,197 −1.5%
2000 46,486 0.6%
2010 46,682 0.4%
2015 (est.) 46,500 −0.4%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2013

As of the census of 2010, there were 46,682 people and 18,743 households within the county. The population density was 112.5 people per square mile (44/km²). There were 21,537 housing units at an average density of 51.9 per square mile (19/km²). The racial makeup of the county was 97.53% White, 0.64% Black or African American, 0.11% Native American, 0.36% Asian, 0.01% Pacific Islander, 0.31% from other races, and 1.03% from two or more races. 1.14% of the population were Hispanic or Latino of any race. 38.8% were of German, 19.2% American, 8.0% Irish and 7.5% English ancestry according to Census 2000. 5.7% report speaking Pennsylvania German, Dutch, or German at home.[1]

There were 18,743 households out of which 29.1% had children under the age of 18 living with them, 57.60% were married couples living together, 8.50% had a female householder with no husband present, and 29.90% were non-families. 26.00% of all households were made up of individuals and 13.20% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 2.99.

In the county, the population was spread out with 23.1% under the age of 18, 2.2% from 18 to 19, 5.1% from 20 to 24, 10.4% from 25 to 34, 20.1% from 35 to 49, 20.6% from 50 to 64, and 18.5% who were 65 years of age or older. The median age was 39 years. The population was 48.93% male, and 51.07% female.


The dominant form of speech in Mifflin County is the Central Pennsylvania accent. Almost everyone in Mifflin County speaks English. The Amish and some Mennonites speak Pennsylvania German also known as Pennsylvania Dutch, a West Central German dialect, which is quite different from modern Standard German. The Amish and Mennonites also can speak English. Few non-Amish or Mennonites in Mifflin County today speak Pennsylvania German, but this was not true in the past.

Amish and Mennonite

For the Amish and Mennonite settlement, see Kishacoquillas Valley.

Micropolitan Statistical Area

The United States Office of Management and Budget has designated Mifflin County as the Lewistown, PA Micropolitan Statistical Area (µSA). As of the 2010 U.S. Census the micropolitan area ranked 10th most populous in the State of Pennsylvania and the 237th most populous in the United States with a population of 46,682.


Map of Mifflin County Pennsylvania With Municipal and Township Labels
Map of Mifflin County, Pennsylvania with Municipal Labels showing Boroughs (red), Townships (white), and Census-designated places (blue).

Under Pennsylvania law, there are four types of incorporated municipalities: cities, boroughs, townships, and, in at most two cases, towns. The following cities, boroughs and townships are located in Mifflin County:



  • Armagh
  • Bratton
  • Brown
  • Decatur
  • Derry
  • Granville
  • Menno
  • Oliver
  • Union
  • Wayne

Census-designated places

Census-designated places are geographical areas designated by the U.S. Census Bureau for the purposes of compiling demographic data. They are not actual jurisdictions under Pennsylvania law. Other unincorporated communities, such as villages, may be listed here as well.

Population ranking

The population ranking of the following table is based on the 2010 census of Mifflin County.

county seat

Rank City/Town/etc. Municipal type Population (2010 Census)
1 Lewistown Borough 8,338
2 Burnham Borough 2,054
3 Belleville CDP 1,827
4 Church Hill CDP 1,627
5 Milroy CDP 1,498
6 Highland Park CDP 1,380
7 Yeagertown CDP 1,050
8 Strodes Mills CDP 757
9 Reedsville CDP 641
10 Juniata Terrace Borough 542
11 Allensville CDP 503
12 Granville CDP 440
13 Maitland CDP 357
14 McVeytown Borough 342
15 Kistler Borough 320
16 Mattawana CDP 276
17 Lumber City CDP 255
18 Longfellow CDP 215
19 Newton Hamilton Borough 205
20 Cedar Crest CDP 195
21 Atkinson Mills CDP 174
22 Potlicker Flats CDP 172
23 Barrville CDP 160
24 Alfarata CDP 149
25 Wagner CDP 128
26 Siglerville CDP 106


Major employers in Mifflin County include:

  • Mifflin County School District


Map of Mifflin County Pennsylvania School Districts
Map of Mifflin County Pennsylvania Public School Districts

Public school districts

Most of the county is served by the Mifflin County School District, with the exception of Wayne Township and the boroughs of Newton-Hamilton and Kistler, which are part of the Mount Union Area School District.

  • Mifflin County School District
  • Mount Union Area School District (also in Huntingdon County)

Head Start preschool programs

Head Start is a federally and state funded preschool program for low income children. The program serves 3- and 4-year-olds. In order to participate the family income must be below federal poverty guidelines.

  • Coleman Head Start Center
  • McVeytown Head Start Center

Private schools

  • Sacred Heart provides a private, Catholic education from kindergarten through fifth grade.
  • Mifflin County Christian Academy located in Decatur Township provides Christian education from kindergarten through grade twelve as well as day care.
  • Several Old Order Amish schools provide education through grade eight.

Colleges and universities

Mifflin County Academy of Science and Technology located in Lewistown provides post high school degrees in nursing, auto mechanics and electrical services and other technology driven careers.

The Lewistown branch of the South Hills School of Business and Technology offers associate degrees and other certifications in various areas of business, technology, and some health care. (Closed 2019)

The Penn State Learning Center in Lewistown offers both two-year and four-year degrees. Recently, the Learning Center opened a state-of-the-art science lab to be used by students attending the Lewistown Hospital School of Nursing.

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