Lemhi County is one of about 3,141 counties and county equivalents in the United States. It has 4,564.2 sq. miles in land area and a population density of 1.7 per square mile. In the last three decades of the 1900s its population grew by 40.2%. On the most recent census form, 98.4% of the population reported only one race, with 0.2% of these reporting African-American. The population of this county is 2.3% Hispanic (of any race). The average household size is 2.20 persons compared to an average family size of 2.70 persons. In 2010 Public administration was the largest of 20 major sectors. It had an average wage per job of $42,350. Per capita income grew by 18.1% between 1999 and 2009 (adjusted for inflation).

People & Income Overview (By Place of Residence)	Value	Rank in U.S.	Industry Overview (2010) (By Place of Work)	Value	Rank in U.S.
Population (2010 Census Count)	7,936	2592	Covered Employment	2,457	2504
Growth (%) since 1990	15.0%	1298	Avg wage per job	$27,573	2714
Households (2010)	3,576	2594	Manufacturing - % all jobs in County	3.3%	2388
Labor Force (persons) (2010)	3,807	2598	Avg wage per job	$30,773	2368
Unemployment Rate (2010)	10.5	964	Transportation & Warehousing - % all jobs in County	0.8%	2408
Per Capita Personal Income (2009)	$30,092	1957	Avg wage per job	$31,023	2855
Median Household Income (2009)	$34,890	2446	Health Care, Social Assist. - % all jobs in County	10.2%	1369
Poverty Rate (2009)	18.5	973	Avg wage per job	$18,273	2146
H.S. Diploma or More - % of Adults 25+ (2010 ACS 5yr)	91.9	230	Finance and Insurance - % all jobs in County	2.1%	1936
Bachelor's Deg. or More - % of Adults 25+ (2010 ACS 5yr)	22.3	814	Avg wage per job	$25,883	2689