Average Age at First Use of Marijuana

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Number of Average Age at Which Students Reported First Smoking Marijuana, All Available Years: by Grade, Gender, and County

20072010
MaleFemaleTotalMaleFemaleTotal
Minnesota6th111111111111
9th131313131313
12th151515151515
All Grades141414141414
Aitkin County6th11N/A11N/AN/AN/A
9th131313121313
12th141414151515
All Grades131413141414
Anoka County6th111111111111
9th131313131313
12th141515151515
All Grades141414141414
Becker County6th101110101010
9th131313131413
12th151515151515
All Grades141414141414
Beltrami County6th101010101110
9th121312121313
12th141414131414
All Grades131313131313
Benton County6th10101011N/A11
9th131313131313
12th151515151515
All Grades141414141514
Big Stone County6thN/AN/AN/A10N/A10
9thN/AN/AN/A13N/A13
12thN/AN/AN/A141515
All GradesN/AN/AN/A141514
Blue Earth County6th11N/A11111111
9th131313131413
12th151515151515
All Grades141514141515
Brown County6th10111111N/A11
9th141514141414
12th151515161515
All Grades141414151415
Carlton County6th111111111111
9th131313131313
12th141414151515
All Grades141414141414
Carver County6th111211151112
9th131313131313
12th151515151615
All Grades141414141514
Cass County6th101111111011
9th121312131313
12th141414141414
All Grades131313131313
Chippewa County6th10N/A10N/AN/AN/A
9th141313N/AN/AN/A
12th151414N/AN/AN/A
All Grades141414N/AN/AN/A
Chisago County6th111111111111
9th131313131313
12th151515151515
All Grades141414141414
Clay County6th111011121011
9th131313131313
12th141515151515
All Grades141414141414
Clearwater County6thN/AN/AN/AN/A1111
9th121212121313
12th151615151515
All Grades141414141314
Cook County6thN/AN/AN/AN/AN/AN/A
9thN/AN/AN/AN/AN/AN/A
12thN/AN/AN/AN/AN/AN/A
All GradesN/AN/AN/AN/AN/AN/A
Cottonwood County6th10101010N/A10
9th141313121313
12th151515151615
All Grades141414141515
Crow Wing County6th111211111111
9th121313131413
12th141515151515
All Grades141414141514
Dakota County6th101010111011
9th131313131413
12th151515151515
All Grades141414141515
Dodge County6th101111111011
9th131313131313
12th141414141515
All Grades141414141414
Douglas County6th101110N/AN/AN/A
9th131313131313
12th151615151515
All Grades141514141414
Faribault County6th11N/A11N/AN/AN/A
9th121413N/AN/AN/A
12th151515N/AN/AN/A
All Grades141514N/AN/AN/A
Fillmore County6th12N/A12N/AN/AN/A
9th121212131313
12th151515151616
All Grades141514151515
Freeborn County6th101211101211
9th131313141414
12th151515161516
All Grades141414151515
Goodhue County6thN/A1111111211
9th131313141314
12th151515151515
All Grades151414151515
Grant County6thN/AN/AN/AN/AN/AN/A
9th141313N/AN/AN/A
12th151515N/AN/AN/A
All Grades151415N/AN/AN/A
Hennepin County6th101111111111
9th131313131313
12th151515151515
All Grades141414141414
Houston County6th11111111N/A11
9th131413131313
12th151515151515
All Grades151515141514
Hubbard County6th101010111010
9th121313131313
12th151414141514
All Grades131414131413
Isanti County6th101110N/AN/AN/A
9th131313N/AN/AN/A
12th141514N/AN/AN/A
All Grades131313N/AN/AN/A
Itasca County6th111111111111
9th131313121313
12th141515151415
All Grades131414141314
Jackson County6th12N/A12N/AN/AN/A
9th131313131413
12th151515151515
All Grades141514151515
Kanabec County6thN/A101011N/A11
9th131313131313
12th141515151515
All Grades141414141414
Kandiyohi County6th101111111111
9th131313121313
12th151615151515
All Grades141414141414
Kittson County6thN/AN/AN/AN/AN/AN/A
9th14N/A14131112
12th151515141615
All Grades141515131514
Koochiching County6thN/AN/AN/A111111
9thN/AN/AN/A141414
12thN/AN/AN/A141514
All GradesN/AN/AN/A141514
Lac Qui Parle County6thN/AN/AN/AN/AN/AN/A
9th141313121312
12th151515161515
All Grades151515141414
Lake County6thN/AN/AN/AN/AN/AN/A
9thN/AN/AN/AN/AN/AN/A
12thN/AN/AN/AN/AN/AN/A
All GradesN/AN/AN/AN/AN/AN/A
Lake of the Woods County6thN/AN/AN/AN/AN/AN/A
9thN/AN/AN/AN/AN/AN/A
12thN/AN/AN/AN/AN/AN/A
All GradesN/AN/AN/AN/AN/AN/A
Le Sueur County6th12N/A12111111
9th131413121413
12th151515151515
All Grades141414141514
Lincoln County6thN/AN/AN/AN/AN/AN/A
9th151314141314
12th111513161616
All Grades121513151515
Lyon County6th111212121112
9th131413121412
12th151515151615
All Grades151414141514
McLeod County6th10111010N/A10
9th131413141414
12th151515161515
All Grades141414151515
Mahnomen County6th111011101010
9th121212131313
12th141414141414
All Grades131313131213
Marshall County6th101010N/AN/AN/A
9th111412131313
12th161616151615
All Grades141515141514
Martin County6th11101010N/A10
9th121313121313
12th151515161616
All Grades141514141514
Meeker County6th10N/A10111011
9th131413131313
12th151515151515
All Grades141414141515
Mille Lacs County6th111010101111
9th121313121313
12th151515151415
All Grades131414131414
Morrison County6th10N/A10111111
9th121313131313
12th141515151515
All Grades131414141514
Mower County6th111011111111
9th131313131313
12th151515151616
All Grades141414151515
Murray County6thN/AN/AN/AN/AN/AN/A
9thN/AN/AN/AN/AN/AN/A
12thN/AN/AN/AN/AN/AN/A
All GradesN/AN/AN/AN/AN/AN/A
Nicollet County6th11N/A11N/AN/AN/A
9th121413N/AN/AN/A
12th151515N/AN/AN/A
All Grades141414N/AN/AN/A
Nobles County6th111011111111
9th131313131313
12th141514151615
All Grades131313141514
Norman County6th101110121212
9th111312121313
12th141615151615
All Grades131514141414
Olmsted County6th111011101111
9th131313131313
12th151515161515
All Grades141414141414
Otter Tail County6th10N/A10111111
9th131313141414
12th151515151515
All Grades141414141414
Pennington County6th12N/A12N/AN/AN/A
9th131313N/AN/AN/A
12th161515N/AN/AN/A
All Grades151414N/AN/AN/A
Pine County6th111010101110
9th121313131413
12th151515151515
All Grades131414141414
Pipestone County6thN/AN/AN/AN/AN/AN/A
9th131413N/AN/AN/A
12th151414N/AN/AN/A
All Grades141414N/AN/AN/A
Polk County6th10N/A10111211
9th131313131313
12th151515141515
All Grades141514141514
Pope County6thN/AN/AN/AN/AN/AN/A
9thN/AN/AN/AN/AN/AN/A
12thN/AN/AN/AN/AN/AN/A
All GradesN/AN/AN/AN/AN/AN/A
Ramsey County6th111111111111
9th131313131313
12th151515151515
All Grades141414141414
Red Lake County6thN/AN/AN/AN/A1010
9th121413111312
12th161616131614
All Grades151515121313
Redwood County6th11N/A11101111
9th131313131213
12th161415151615
All Grades141414131313
Renville County6th10N/A1010N/A10
9th131313121412
12th141515151314
All Grades141414141313
Rice County6th111111101111
9th131313131313
12th151515141515
All Grades141414141414
Rock County6thN/AN/AN/AN/AN/AN/A
9thN/AN/AN/AN/AN/AN/A
12thN/AN/AN/AN/AN/AN/A
All GradesN/AN/AN/AN/AN/AN/A
Roseau County6th101111101312
9th131313141314
12th151515151515
All Grades141414151515
St. Louis County6th111111111111
9th131313131313
12th151515151515
All Grades141414141414
Scott County6th111111111111
9th131413131313
12th151515151515
All Grades141514141414
Sherburne County6th101111111111
9th131313131313
12th151515151515
All Grades141414141414
Sibley County6th11N/A11111010
9th131212131313
12th141515151615
All Grades131514141414
Stearns County6th111111111111
9th131313131413
12th151515151515
All Grades141414151515
Steele County6th101111111111
9th131413141414
12th151515151515
All Grades141514141414
Stevens County6thN/AN/AN/AN/AN/AN/A
9th121413N/AN/AN/A
12th161516N/AN/AN/A
All Grades151515N/AN/AN/A
Swift County6thN/AN/AN/A11N/A11
9th131414131413
12th141514151615
All Grades141414141515
Todd County6th10N/A10111111
9th131313141313
12th151615151515
All Grades141414141515
Traverse County6thN/AN/AN/AN/AN/AN/A
9thN/AN/AN/AN/AN/AN/A
12thN/AN/AN/AN/AN/AN/A
All GradesN/AN/AN/AN/AN/AN/A
Wabasha County6th111011121011
9th131313131313
12th141515151515
All Grades141414141414
Wadena County6th10111111N/A11
9th131313121212
12th141615151415
All Grades131414141414
Waseca County6thN/A1111N/AN/AN/A
9th131313N/AN/AN/A
12th151515N/AN/AN/A
All Grades141414N/AN/AN/A
Washington County6th101010111111
9th131313131413
12th151515151615
All Grades141414141514
Watonwan County6th11N/A11111212
9th131313131313
12th151615151515
All Grades141514141414
Wilkin County6th12N/A1210N/A10
9th141313141113
12th161516161616
All Grades151515151415
Winona County6th10N/A10111211
9th131313131313
12th141414151615
All Grades141414141514
Wright County6th121111111011
9th131313131313
12th151515151515
All Grades141414151515
Yellow Medicine County6thN/AN/AN/AN/A1212
9th121313131212
12th141515131514
All Grades141414131514

About the Indicator: These data are valuable for planning and reporting purposes.  Some grantees are required to report age of first use as one their GPRA measures.  In addition, prevention planners may use data about age of first use as one factor in determining when to initiate prevention programs, policies, and practices.  N/A indicates that the data are unavailable or were not collected.

Data Source: Minnesota Student Survey (MSS)

Description: The MSS is a confidential and anonymous self-administered survey given to students attending Minnesota public, charter and tribal schools. From 1995 to 2010, the survey was administered to students in 6th, 9th, and 12th grades. New in 2013, the survey was administered to students in 5th, 8th, 9th, and 11th grades. Trend data are now only available for 9th graders, and only for survey questions that did not change. Most schools elect to participate in the survey; in 2013, this included 84% of public schools in Minnesota.

Although the data are not presented here, the survey is also administered to area learning centers, juvenile correction facilities and private schools electing to participate.

Sponsored by: Minnesota Department of Education

Geographic Level: State, Region, and County

Aggregated data at the state and county level do not reveal disparities that may exist within a given geographic area.

Frequency: Data collected and reported every three years

Characteristics: The results of the MSS are also available at a county level. Data Privacy requirements mandate that data is presented in a manner such that no individual student can be identified through the presentation of the results. As part of the Data Privacy practices, the results are also presented in a manner that no individual school district could be identified through the results. Therefore, for counties that have only one school district, the results are not presented. Results are also withheld for counties in which the minimum number for student participation was not met.

The MSS is a “census” of schools, not a sample. The school districts get their own data. Fifth-graders were not asked all substance use questions. Some school districts do not participate, and student participation within the school district can vary widely. These data are self-reported.