Lewis and Clark County

administration
Lewis and Clark County Courthouse
US state :	Montana
Administrative headquarters :	Helena
Foundation :	1864
Demographics
Residents :	63,395 (2010)
Population density :	7.1 inhabitants / km ²
geography
Total area :	9059 km²
Water surface :	95 km²
map

Website : www.co.lewis-clark.mt.us

Lewis and Clark County is a county in the state of Montana in the United States . The county seat is in Helena .

history

The county was named after the explorers Lewis and Clark . On August 5, 1949, thirteen men from a fire jump unit died in Mann Gulch in the county. The American author Norman Maclean describes the incident in his book '' Junge Männer im Feuer '' ( Young Men in Fire ) (1994), on which the American organizational psychologist Karl E. Weick based one of the most famous presentations of the sensemaking concept.

68 buildings and sites in the county are listed on the National Register of Historic Places (as of February 8, 2018).

Demographic data

growth of population
Census	Residents	± in%
1870	5040	-
1880	6521	29.4%
1890	19,145	193.6%
1900	19,171	0.1%
1910	21,853	14%
1920	18,660	-14.6%
1930	18,224	-2.3%
1940	22,131	21.4%
1950	24,540	10.9%
1960	28.006	14.1%
1970	33.281	18.8%
1980	43,039	29.3%
1990	47,495	10.4%
2000	55,716	17.3%
2010	63,395	13.8%
Before 1900 1900–1990 2000 + 2010 Lewis and Clark County's age pyramid (as of 2000)

Missouri River Bridge over the Missouri , listed on the NRHP

Dearborn River High Bridge , listed on the NRHP

As of the 2000 census , the county had 55,716 people. There were 22,850 households and 14,966 families. The population density was 6 people per square kilometer. The racial the population was composed of 95.21% White, 0.20% African American, 2.04% Native American, 0.52% Asian, 0.05% Pacific Islander, and 0.38% other races Groups; 1.61% were from two or more races. 1.51% of the population were Hispanic or Latino of any race.

Of the 22,850 households, 32.20% had children and young people under the age of 18 living with them. 52.40% were married couples living together, 9.20% were single mothers. 34.50% were not families. 29.10% were single households and 8.90% had someone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.95.

For the entire county, the population was composed of 25.60% of residents under 18 years of age, 8.50% between 18 and 24 years of age, 27.90% between 25 and 44 years of age, and 26.20% between 45 and 64 years of age 11.70% were 65 years of age or over. The median age was 38 years. For every 100 females there were 96.50 males, and for every 100 females aged 18 and over there were 94.00 males.

The median income for a household in the county is $ 37,360 , and the median income for a family is $ 46,766. Males had a median income of $ 33,515 versus $ 23,961 for females. The per capita income was $ 18,763. 10.90% of the population and 7.30% of families are below the poverty line. 12.60% of them were under 18 years of age and 6.50% were 65 years of age or older.

Places in Lewis and Clark County

Citys

Helena

Towns

East Helena

Census-designated places (CDP)

Unincorporated Communities

Web links

Commons : Lewis and Clark County - Collection of Pictures, Videos, and Audio Files

Individual evidence

↑ GNIS-ID: 793926. Retrieved on February 22, 2011 (English).

↑ Richard C. Rothermel (May 1993) Mann Gulch Fire: A Race That Couldn't Be Won ; United States Department of Agriculture, Forest Service, Intermountain Research Station, General Technical Report INT-299;

^ Weick, Karl E. 1993 The collapse of sensemaking in organizations: The Mann Gulch disaster Administrative Science Quarterly; Dec 1993; 38, 4; ABI / INFORM Global pg. 628 ( Available online ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. )@1@ 2

↑ Search mask database in the National Register Information System. National Park Service , accessed February 8, 2018.

↑ US Census Bureau - Census of Population and Housing . Retrieved March 15, 2011

↑ Extract from Census.gov . Retrieved February 18, 2011

↑ Extract from census.gov (2000 + 2010) ( Memento of the original from July 13, 2011 on WebCite ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved April 13, 2012 @1@ 2

47.11 -112.38Coordinates: 47 ° 7 ' N , 112 ° 23' W

[1] GNIS-ID: 793926. Retrieved on February 22, 2011 (English).

[Rothermel93-2] Richard C. Rothermel (May 1993) Mann Gulch Fire: A Race That Couldn't Be Won ; United States Department of Agriculture, Forest Service, Intermountain Research Station, General Technical Report INT-299;