| Official Name: | Martin Lake |
| Settlement Type: | Census-designated place (CDP) and Unincorporated community |
| Mapsize: | 250px |
| Pushpin Map: | Minnesota#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Minnesota |
| Subdivision Type2: | County |
| Subdivision Name2: | Anoka County |
| Subdivision Type3: | Township |
| Subdivision Name3: | Linwood Township |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 4.53 |
| Area Land Km2: | 3.57 |
| Area Water Km2: | 0.97 |
| Area Total Sq Mi: | 1.75 |
| Area Land Sq Mi: | 1.38 |
| Area Water Sq Mi: | 0.37 |
| Population As Of: | 2020 |
| Population Total: | 907 |
| Population Density Km2: | 254.25 |
| Population Density Sq Mi: | 658.68 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 919 |
| Coordinates: | 45.3811°N -93.095°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 55079 |
| Area Code: | 651 and 763 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 647575 |
Martin Lake is an unincorporated community and census-designated place (CDP) in Linwood Township, Anoka County, Minnesota, United States. Its population was 933 as of the 2010 census.[2]
Anoka County Road 26 and Anoka County Road 85 serve as two main routes in the community. Anoka County Road 22 is nearby.
Martin Lake is located within ZIP code 55079, based in Stacy. Nearby places include East Bethel and Stacy.
As of the census of 2010, there were 933 people, 375 households, and 267 families in the CDP. The population density was 677.6PD/sqmi. There were 434 housing units at an average density of 315.2/sqmi. The racial makeup of the CDP was 97.1% White, 0.8% African American, 0.3% Native American, 0.4% Asian, 0.3% from other races, and 1.1% from two or more races. Hispanic or Latino of any race were 1.8% of the population.
There were 375 households, of which 27.7% had children under the age of 18 living with them, 56.8% were married couples living together, 7.7% had a female householder with no husband present, 6.7% had a male householder with no wife present, and 28.8% were non-families. 22.9% of all households were made up of individuals, and 2.9% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 2.91.
The median age in the CDP was 44.5 years. 20.8% of residents were under the age of 18; 7.1% were between the ages of 18 and 24; 23.6% were from 25 to 44; 42.0% were from 45 to 64; and 6.5% were 65 years of age or older. The gender makeup of the CDP was 54.3% male and 45.7% female.