| Official Name: | Hayfield Township, Minnesota |
| Settlement Type: | Township |
| Pushpin Map: | Minnesota#USA |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location within the state of Minnesota |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Minnesota |
| Subdivision Type2: | County |
| Subdivision Name2: | Dodge |
| Unit Pref: | Imperial |
| Area Total Km2: | 94.7 |
| Area Land Km2: | 94.7 |
| Area Water Km2: | 0.0 |
| Area Total Sq Mi: | 36.6 |
| Area Land Sq Mi: | 36.6 |
| Area Water Sq Mi: | 0.0 |
| Population As Of: | 2000 |
| Population Total: | 445 |
| Population Density Km2: | 4.7 |
| Population Density Sq Mi: | 12.2 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 397 |
| Elevation Ft: | 1302 |
| Coordinates: | 43.8797°N -92.8542°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 55940 |
| Area Code: | 507 |
| Blank Name: | FIPS code |
| Blank Info: | 27-27890[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0664425[2] |
Hayfield Township is a township in Dodge County, Minnesota, United States. The population was 445 at the 2000 census.
Hayfield Township was organized in 1872, and named after Hayfield Township, Crawford County, Pennsylvania.[3]
According to the United States Census Bureau, the township has a total area of 36.6sqmi, all land.
As of the census of 2000, there were 445 people, 137 households, and 117 families residing in the township. The population density was 12.2sp=usNaNsp=us. There were 140 housing units at an average density of 3.8sp=usNaNsp=us. The racial makeup of the township was 98.43% White, 0.45% Asian, 0.45% from other races, and 0.67% from two or more races. Hispanic or Latino of any race were 1.35% of the population.
There were 137 households, out of which 48.2% had children under the age of 18 living with them, 76.6% were married couples living together, 8.0% had a female householder with no husband present, and 13.9% were non-families. 11.7% of all households were made up of individuals, and 7.3% had someone living alone who was 65 years of age or older. The average household size was 3.25 and the average family size was 3.54.
In the township, the population was distributed as follows: 36.4% were under the age of 18, 5.4% were between 18 and 24, 28.8% were between 25 and 44, 18.0% were between 45 and 64, and 11.5% were 65 years of age or older. The median age was 35 years. For every 100 females, there were 107.0 males. For every 100 females aged 18 and over, there were 96.5 males.
The median income for a household in the township was $48,438, and the median income for a family was $50,208. Males had a median income of $38,036 versus $25,313 for females. The per capita income for the township was $15,587. About 8.5% of families and 9.2% of the population were below the poverty line, including 14.4% of those under age 18 and 4.2% of those age 65 or over.