| Official Name: | Kathio 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: | Mille Lacs |
| Unit Pref: | Imperial |
| Area Total Km2: | 188.1 |
| Area Land Km2: | 109.8 |
| Area Water Km2: | 78.2 |
| Area Total Sq Mi: | 72.6 |
| Area Land Sq Mi: | 42.4 |
| Area Water Sq Mi: | 30.2 |
| Population As Of: | 2010 |
| Population Total: | 1627 |
| Population Density Km2: | auto |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 382 |
| Elevation Ft: | 1253 |
| Coordinates: | 46.2042°N -93.7767°W |
| Blank Name: | FIPS code |
| Blank Info: | 27-32516[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0664603[2] |
Kathio Township is a township in Mille Lacs County, Minnesota, United States. The population was 1,627 at the 2010 census.[3]
According to the United States Census Bureau, the township has a total area of 72.6sqmi, of which 42.4sqmi is land and 30.2sqmi, or 41.59%, is water.
As of the census of 2000, there were 1,309 people, 483 households, and 339 families residing in the township. The population density was 30.9sp=usNaNsp=us. There were 780 housing units at an average density of 18.4sp=usNaNsp=us. The racial makeup of the township was 43.70% White, 0.15% African American, 54.39% Native American, 0.08% Asian, 0.15% from other races, and 1.53% from two or more races. Hispanic or Latino of any race were 0.84% of the population.
There were 483 households, out of which 30.4% had children under the age of 18 living with them, 38.9% were married couples living together, 22.4% had a female householder with no husband present, and 29.8% were non-families. 25.3% of all households were made up of individuals, and 10.6% had someone living alone who was 65 years of age or older. The average household size was 2.70 and the average family size was 3.21.
In the township the population was spread out, with 31.8% under the age of 18, 8.3% from 18 to 24, 23.9% from 25 to 44, 21.9% from 45 to 64, and 14.1% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 98.9 males. For every 100 females age 18 and over, there were 100.7 males.
The median income for a household in the township was $26,719, and the median income for a family was $31,989. Males had a median income of $25,417 versus $20,625 for females. The per capita income for the township was $13,690. About 21.6% of families and 24.7% of the population were below the poverty line, including 38.3% of those under age 18 and 8.2% of those age 65 or over.