| Official Name: | Union Township, Mifflin County, Pennsylvania |
| Settlement Type: | Township |
| Mapsize: | 250x200px |
| Image Map1: | Map of Pennsylvania highlighting Mifflin County.svg |
| Mapsize1: | 250x200px |
| Map Caption1: | Map of Mifflin County, Pennsylvania |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Mifflin |
| Government Type: | Board of Supervisors |
| Leader Title: | Chairman |
| Leader Name: | Brian Glick |
| Leader Title1: | Vice Chairman |
| Leader Name1: | Keith Mernin |
| Leader Title2: | Supervisor |
| Leader Name2: | James Treaster, Jr. |
| Established Title: | Settled |
| Established Date: | 1754 |
| Established Title1: | Incorporated |
| Established Date1: | 1790 |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 66.05 |
| Area Land Km2: | 65.95 |
| Area Water Km2: | 0.10 |
| Area Total Sq Mi: | 25.50 |
| Area Land Sq Mi: | 25.46 |
| Area Water Sq Mi: | 0.04 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 3655 |
| Population Density Km2: | 52.57 |
| Population Density Sq Mi: | 136.16 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Postal Code Type: | Zip code |
| Postal Code: | 17004 |
| Area Code: | 717 |
| Website: | http://uniontwpmc.com/ |
| Blank Name: | FIPS code |
| Blank Info: | 42-087-78392 |
| Footnotes: | Local phone exchange: 935 |
| Pop Est As Of: | 2022 |
| Population Est: | 3686 |
Union Township is a township in Mifflin County, Pennsylvania, United States. The population was 3,655 at the time of the 2020 census.[2]
According to the United States Census Bureau, the township has a total area of 25.5 square miles (66.1 km2), all of it land.
As of the census[3] of 2000, there were 3,313 people, 1,163 households, and 860 families residing in the township.
The population density was 129.8sp=usNaNsp=us. There were 1,242 housing units at an average density of 48.7sp=usNaNsp=us.
The racial makeup of the township was 99.28% White, 0.21% African American, 0.06% Native American, 0.09% Asian, 0.15% from other races, and 0.21% from two or more races. Hispanic or Latino of any race were 0.30% of the population.
There were 1,163 households, out of which 30.6% had children under the age of eighteen living with them; 66.3% were married couples living together, 5.7% had a female householder with no husband present, and 26.0% were non-families. 24.5% of all households were made up of individuals, and 15.3% had someone living alone who was sixty-five years of age or older.
The average household size was 2.71 and the average family size was 3.25.
In the township the population was spread out, with 27.8% under the age of eighteen, 6.4% from eighteen to twenty-four, 22.8% from twenty-five to forty-four, 19.6% from forty-five to sixty-four, and 23.3% who were sixty-five years of age or older. The median age was forty years.
For every one hundred females, there were 84.8 males. For every one hundred females who were aged eighteen or older, there were 80.1 males.
The median income for a household in the township was $32,530, and the median income for a family was $40,000. Males had a median income of $30,965 compared with that of $20,441 for females.
The per capita income for the township was $14,185.
Roughly 6.2% of families and 10.5% of the population were living below the poverty line, including 13.0% of those who were under the age of eighteen and 14.2% of those who were aged sixty-five or older.