Population by age
Total population	70,340
Under 5 years	3,967
5 to 9 years	4,166
10 to 14 years	4,474
15 to 19 years	4,247
20 to 24 years	3,936
25 to 34 years	8,540
35 to 44 years	8,914
45 to 54 years	8,343
55 to 59 years	5,611
60 to 64 years	4,873
65 to 74 years	8,459
75 to 84 years	3,696
85 years and over	1,114
Median age (years)	40.9
Under 18 years	15,169
16 years and over	56,828
18 years and over	55,171
21 years and over	52,632
62 years and over	15,838
65 years and over	13,269

Population by race
Total population	70,340
One race	67,212
White	65,139
Black or African American	334
American Indian and Alaska Native	807
Asian	423
Native Hawaiian and Other Pacific Islander	0
Some other race	509
Two or more races	3,128

Citizen, voting age population
Citizen, VOTING AGE 18 and over population	54,812
Male Citizen, VOTING AGE 18 and over population	27,067
Female Citizen, VOTING AGE 18 and over population	27,745

Social characteristics in Lewis and Clark County, Montana

Households by type
Total households	30,011
Family households (families)	14,142
Married-couple family	2,083
Male householder, no wife present, family	6,142
Female householder, no husband present, family	4,671
Nonfamily households	7,644
Average household size	9,487
Average family size	2.29

Economic characteristics in Lewis and Clark County, Montana

Income and benefits (in inflation-adjusted dollars)
Total households	30,011
Less than $10,000	941
$10,000 to $14,999	928
$15,000 to $24,999	2,566
$25,000 to $34,999	2,916
$35,000 to $49,999	3,916
$50,000 to $74,999	5,465
$75,000 to $99,999	4,027
$100,000 to $149,999	5,237
$150,000 to $199,999	2,203
$200,000 or more	1,812
Median household income (dollars)	66,486

Housing characteristics in Lewis and Clark County, Montana

Housing occupancy
Total housing units	33,299
Occupied housing units	30,011
Vacant housing units	3,288

Units in structure
Total housing units	33,299
1-unit, detached	23,005
1-unit, attached	1,296
2 units	1,038
3 or 4 units	2,348
5 to 9 units	775
10 to 19 units	668
20 or more units	1,132
Mobile home	2,995
Boat, RV, van, etc.	42

Year structure built
Total housing units	33,299
Built 2014 or later	127
Built 2010 to 2013	3,308
Built 2000 to 2009	4,688
Built 1990 to 1999	4,525
Built 1980 to 1989	3,857
Built 1970 to 1979	6,058
Built 1960 to 1969	2,567
Built 1950 to 1959	2,595
Built 1940 to 1949	1,069
Built 1939 or earlier	4,505

Rooms
Total housing units	33,299
1 room	979
2 rooms	765
3 rooms	2,696
4 rooms	5,632
5 rooms	5,480
6 rooms	4,748
7 rooms	4,112
8 rooms	3,552
9 rooms or more	5,335
Median rooms	5.7

Bedrooms
Total housing units	33,299
No bedroom	1,095
1 bedroom	3,087
2 bedrooms	8,503
3 bedrooms	11,506
4 bedrooms	6,233
5 or more bedrooms	2,875

Housing tenure
Occupied housing units	30,011
Owner-occupied	21,433
Renter-occupied	8,578
Average household size of owner-occupied unit	2.43
Average household size of renter-occupied unit	1.94

Year householder moved into unit
Occupied housing units	30,011
Moved in 2017 or later	3,152
Moved in 2015 to 2016	9,192
Moved in 2010 to 2014	5,449
Moved in 2000 to 2009	6,456
Moved in 1990 to 1999	2,868
Moved in 1989 and earlier	2,894

Value
Owner-occupied units	21,433
Less than $50,000	1,166
$50,000 to $99,999	684
$100,000 to $149,999	916
$150,000 to $199,999	2,328
$200,000 to $299,999	6,966
$300,000 to $499,999	7,221
$500,000 to $999,999	1,739
$1,000,000 or more	413
Median (dollars)	280,600

Mortgage status
Owner-occupied units	21,433
Housing units with a mortgage	13,602
Housing units without a mortgage	7,831

Gross rent
Occupied units paying rent	8,188
Less than $500	625
$500 to $999	4,571
$1,000 to $1,499	2,243
$1,500 to $1,999	454
$2,000 to $2,499	231
$2,500 to $2,999	9
$3,000 or more	55
Median (dollars)	905
No rent paid	390

Demographic data for Lewis and Clark County, MT and each city in the county. Lists of cities by population, wealth and poverty in Lewis and Clark County, MT.

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