| Official Name: | Upper Mifflin Township, Pennsylvania |
| Settlement Type: | Township |
| Mapsize: | 250x200px |
| Image Map1: | Map of Pennsylvania highlighting Cumberland County.svg |
| Mapsize1: | 250x200px |
| Map Caption1: | Map of Cumberland County, Pennsylvania |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Cumberland |
| Government Type: | Board of Supervisors |
| Established Title: | Settled |
| Established Title1: | Incorporated |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 57.26 |
| Area Land Km2: | 56.25 |
| Area Water Km2: | 1.01 |
| Area Total Sq Mi: | 22.11 |
| Area Land Sq Mi: | 21.72 |
| Area Water Sq Mi: | 0.39 |
| Population As Of: | 2010 |
| Population Total: | 1304 |
| Population Density Km2: | 24.37 |
| Population Density Sq Mi: | 63.13 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Area Code: | 717 |
| Pop Est As Of: | 2016 |
| Population Est: | 1371 |
| Blank Name: | FIPS code |
| Blank Info: | 42-041-79152 |
Upper Mifflin Township is a township in Cumberland County, Pennsylvania, United States. The population was 1,304 at the 2010 census.[2]
The township is in northwestern Cumberland County, bordered to the northwest by Perry County, with the county line following the ridgecrest of Blue Mountain, the northern edge of the Cumberland Valley. The southern boundary of the township follows Conodoguinet Creek, a tributary of the Susquehanna River.
According to the United States Census Bureau, the township has a total area of 57.3sqkm, of which 56.2sqkm is land and 1sqkm, or 1.76%, is water.[2]
As of the census[3] of 2000, there were 1,347 people, 452 households, and 380 families residing in the township. The population density was 61.6sp=usNaNsp=us. There were 469 housing units at an average density of 21.5/sq mi (8.3/km). The racial makeup of the township was 98.59% White, 0.37% African American, 0.22% Native American, 0.07% Asian, and 0.74% from two or more races. Hispanic or Latino of any race were 0.45% of the population.
There were 452 households, out of which 40.7% had children under the age of 18 living with them, 73.9% were married couples living together, 6.9% had a female householder with no husband present, and 15.9% were non-families. 11.9% of all households were made up of individuals, and 3.8% had someone living alone who was 65 years of age or older. The average household size was 2.98 and the average family size was 3.25.
In the township the population was spread out, with 28.4 percent under the age of 18, 7.5% from 18 to 24, 32.9% from 25 to 44, 23.9% from 45 to 64, and 7.3% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 105.6 males. For every 100 females age 18 and over, there were 109.1 males.
The median income for a household in the township was $45,114, and the median income for a family was $46,176. Males had a median income of $31,581 versus $21,734 for females. The per capita income for the township was $15,660. About 5.8% of families and 8.7% of the population were below the poverty line, including 16.7% of those under age 18 and 3.6% of those age 65 or over.