Unified School District · ID
Madison School District 321
Madison School District 321 is a unified school district in Idaho with a community population of 49,923. The median household income is $56,189 and the median age is 21.2.
49,923
Population
147
People / sq mi
$56,189
Median Income
21.2
Median Age
Madison School District 321 covers 340 sq mi of land at 146.9 people per square mile.
Race & Ethnicity
| White | 87.2% |
| Black or African American | 0.0% |
| Asian | 57.0% |
| Hispanic or Latino (any race) | 0.1% |
Economy & Income
$56,189
Median Household Income
$23,297
Per Capita Income
13.7%
Poverty Rate
6.0%
Unemployment
Housing
$413,800
Median Home Value
$1,000
Median Rent
36.6%
Homeownership
Education Attainment
97.3%
High School+
41.6%
Bachelor's+
Other Idaho School Districts
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State rankings
Frequently Asked Questions
Madison School District 321 serves a community with a population of 49,923 according to the latest Census ACS 5-Year estimates. This unified school district is located in Idaho.
The median household income in Madison School District 321 is $56,189, with a per capita income of $23,297. The poverty rate is 13.7%.
Madison School District 321 is 87.2% White, 0.0% Black or African American, 57.0% Asian, and 0.1% Hispanic or Latino, per Census ACS data.
In Madison School District 321, 97.3% of adults have a high school diploma or higher, and 41.6% hold a bachelor's degree or higher, per Census ACS estimates.
The median home value in Madison School District 321 is $413,800, with a median rent of $1,000. The homeownership rate is 36.6%.
More from Idaho
Data for Madison School District 321 from the American Community Survey 5-Year estimates. Land area from Census Gazetteer files. This is a unified school district (GEOID: 1601920).
Age is the most distinctive thing about Madison School District 321: a median age of 21.2, younger than the national median. Madison School District 321 is a school district in Idaho with a population of 49,923.
Earnings trail the nation, with the median household making $56,189, below the US median of $78,538. Roughly 13.7% of residents fall below the poverty line, above the national 12.4%. The median home value is $413,800, with typical rent around $1,000.
Educational attainment is on the higher side for US school districts — 41.6% of adults hold a four-year degree, above the national 35.0%.
Source: U.S. Census Bureau ACS, 2026.