Unified School District · ID
Lewiston Independent School District 340
Lewiston Independent School District 340 is a unified school district in Idaho with a community population of 37,403. The median household income is $73,624 and the median age is 40.3.
37,403
Population
268
People / sq mi
$73,624
Median Income
40.3
Median Age
Lewiston Independent School District 340 covers 140 sq mi of land at 268.0 people per square mile.
Race & Ethnicity
| White | 90.9% |
| Black or African American | 0.0% |
| Asian | 62.6% |
| Hispanic or Latino (any race) | 0.2% |
Economy & Income
$73,624
Median Household Income
$39,038
Per Capita Income
8.0%
Poverty Rate
1.4%
Unemployment
Housing
$340,500
Median Home Value
$1,029
Median Rent
69.2%
Homeownership
Education Attainment
93.9%
High School+
27.8%
Bachelor's+
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State rankings
Frequently Asked Questions
Lewiston Independent School District 340 serves a community with a population of 37,403 according to the latest Census ACS 5-Year estimates. This unified school district is located in Idaho.
The median household income in Lewiston Independent School District 340 is $73,624, with a per capita income of $39,038. The poverty rate is 8.0%.
Lewiston Independent School District 340 is 90.9% White, 0.0% Black or African American, 62.6% Asian, and 0.2% Hispanic or Latino, per Census ACS data.
In Lewiston Independent School District 340, 93.9% of adults have a high school diploma or higher, and 27.8% hold a bachelor's degree or higher, per Census ACS estimates.
The median home value in Lewiston Independent School District 340 is $340,500, with a median rent of $1,029. The homeownership rate is 69.2%.
More from Idaho
Data for Lewiston Independent School District 340 from the American Community Survey 5-Year estimates. Land area from Census Gazetteer files. This is a unified school district (GEOID: 1601860).
this entity is one of the data points covered by this site’s U.S. population demographics dataset. The detail above comes directly from the U.S. Census Bureau ACS and decennial files; the context that follows situates the headline numbers against the broader distribution across U.S. states, metros, cities, and ZIPs.
Every number on this page links back to the U.S. Census Bureau ACS and decennial files; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. states, metros, cities, and ZIPs with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: U.S. Census Bureau ACS, 2026.