| Official Name: | Dayton, Montana |
| Settlement Type: | Census-designated place |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Montana |
| Subdivision Type2: | County |
| Subdivision Name2: | Lake |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.44 |
| Area Land Km2: | 1.42 |
| Area Water Km2: | 0.02 |
| Area Total Sq Mi: | 0.56 |
| Area Land Sq Mi: | 0.55 |
| Area Water Sq Mi: | 0.01 |
| Population As Of: | 2020 |
| Population Total: | 104 |
| Population Density Km2: | 73.09 |
| Population Density Sq Mi: | 189.44 |
| Timezone: | Mountain (MST) |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Elevation M: | 887 |
| Elevation Ft: | 2910 |
| Coordinates: | 47.865°N -114.2769°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 59914 |
| Area Code: | 406 |
| Blank Name: | FIPS code |
| Blank Info: | 30-19525 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0770496 |
Dayton (iʔɫixʷ,[2] Kutenai: aki¢qa) is an unincorporated community and census-designated place (CDP) in Lake County, Montana, United States. The population was 84 at the 2010 census.[3]
Dayton is located in northwestern Lake County at 47.865°N -114.2769°W (47.864979, -114.276835),[4] on the northwest shore of Flathead Lake, north of its Big Arm. U.S. Route 93 runs along the northern and western edges of the community, leading north to Kalispell and south to Polson, the Lake county seat.
According to the United States Census Bureau, the CDP has a total area of 1.4km2, of which 0.02sqkm, or 1.23%, are water.[5]
As of the census[6] of 2000, there were 95 people, 48 households, and 28 families residing in the CDP. The population density was 177sp=usNaNsp=us. There were 100 housing units at an average density of 186.3sp=usNaNsp=us. The racial makeup of the CDP was 93.68% White, 3.16% Native American, and 3.16% from two or more races.
There were 48 households, out of which 8.3% had children under the age of 18 living with them, 58.3% were married couples living together, and 39.6% were non-families. 31.3% of all households were made up of individuals, and 14.6% had someone living alone who was 65 years of age or older. The average household size was 1.98 and the average family size was 2.45.
In the CDP, the population was spread out, with 8.4% under the age of 18, 4.2% from 18 to 24, 17.9% from 25 to 44, 45.3% from 45 to 64, and 24.2% who were 65 years of age or older. The median age was 54 years. For every 100 females, there were 86.3 males. For every 100 females age 18 and over, there were 81.3 males.
The median income for a household in the CDP was $33,125, and the median income for a family was $42,500. Males had a median income of $15,833 versus $15,417 for females. The per capita income for the CDP was $18,501. None of the population and none of the families were below the poverty line.