| Official Name: | Fairfield Township, Michigan |
| Settlement Type: | Civil township |
| Pushpin Map: | Michigan#USA |
| Pushpin Label Position: | left |
| Pushpin Label: | Fairfield Township |
| Pushpin Map Caption: | Location within the state of Michigan |
| Mapsize: | 250 |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Michigan |
| Subdivision Type2: | County |
| Subdivision Name2: | Shiawassee |
| Leader Title: | Supervisor |
| Leader Name: | Richard Zemla |
| Leader Title1: | Clerk |
| Leader Name1: | Carolyn Long |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 25.07 |
| Area Land Sq Mi: | 25.06 |
| Area Water Sq Mi: | 0.01 |
| Population As Of: | 2020 |
| Population Total: | 652 |
| Population Density Sq Mi: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation M: | 227 |
| Elevation Ft: | 745 |
| Coordinates: | 43.0792°N -84.3339°W |
| Postal Code Type: | ZIP code(s) |
| Postal Code: | 48831 (Elsie) 48841 (Henderson) |
| Area Code: | 989 |
| Blank Name: | FIPS code |
| Blank Info: | 26-27040[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1626264 |
Fairfield Township is a civil township of Shiawassee County in the U.S. state of Michigan. As of the 2020 census, the township population was 652.[2]
According to the United States Census Bureau, the township has a total area of 25.07sqmi, of which 25.06sqmi is land and 0.01sqmi (0.04%) is water.[6]
As of the census of 2000, there were 745 people, 272 households, and 205 families residing in the township. The population density was 29.7sp=usNaNsp=us. There were 288 housing units at an average density of 11.5sp=usNaNsp=us. The racial makeup of the township was 99.06% White, 0.27% Asian, 0.13% Pacific Islander, and 0.54% from two or more races. Hispanic or Latino of any race were 0.94% of the population.
There were 272 households, out of which 35.3% had children under the age of 18 living with them, 64.7% were married couples living together, 6.6% had a female householder with no husband present, and 24.3% were non-families. 18.8% of all households were made up of individuals, and 7.0% had someone living alone who was 65 years of age or older. The average household size was 2.74 and the average family size was 3.14.
In the township the population was spread out, with 26.7% under the age of 18, 7.7% from 18 to 24, 29.1% from 25 to 44, 24.7% from 45 to 64, and 11.8% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 108.1 males. For every 100 females age 18 and over, there were 106.0 males.
The median income for a household in the township was $42,188, and the median income for a family was $44,375. Males had a median income of $32,240 versus $26,750 for females. The per capita income for the township was $16,327. About 6.7% of families and 10.2% of the population were below the poverty line, including 13.5% of those under age 18 and 2.8% of those age 65 or over.