Polk County, IA Demographic Data
Polk County, IA Summary
Polk County is located in Iowa
- Population: 443,710
- Area: 591.54 sq. miles
- Land Area: 573.80 sq. miles
- Water Area: 17.74 sq. miles
- Population Density: 750.09 people per sq. mile
- Elevation: 892.39 ft
- Time Zone: Central Standard Time (GMT -6)
- Daylight Savings: Yes
Iowa Heat Map by County Population
Cities With Largest Population in IA
Counties With Largest Population in IA
Sponsored
Polk County, IA Gender Breakdown
Gender
Number
Percent
National Avg
Female
240,906
51%
50.8
Male
233,139
49%
49.2
Total Population
474,045
323,128,000
Polk County, IA Age Breakdown
Age Group
Number
Percent
National Avg
Under 5 Years
34,791
7.3%
6.1
5 to 9 Years
33,646
7.1%
6.3
10 to 14 Years
32,065
6.8%
6.4
15 to 19 Years
31,186
6.6%
6.7
20 to 24 Years
29,317
6.2%
6.9
25 to 34 Years
73,770
15.6%
13.7
35 to 44 Years
64,040
13.5%
12.6
45 to 54 Years
61,029
12.9%
13.2
55 to 59 Years
27,365
5.8%
6.7
60 to 64 Years
28,671
6.0%
6.1
65 to 74 Years
34,611
7.3%
8.9
75 to 84 Years
15,954
3.4%
4.4
85 Years and Over
7,600
1.6%
1.9
Age Statistics
Number
Percent
National Avg
18 Years and over
354,799
74.8%
77.2
Female
182,002
51.3%
51.3
Male
172,797
48.7%
48.7
21 Years and over
336,188
70.9%
73.1
62 Years and over
74,600
15.7%
18.8
65 Years and over
58,165
12.3%
15.2
Female
32,899
56.6%
55.8
Male
25,266
43.4%
44.2
Median Age (years)
35
0.0%
0.0
Polk County, IA Race Breakdown
Race
Number
Percent
National Avg
One Race
460,972
97.2%
96.8
White
396,575
83.7%
72.6
Black or African American
31,968
6.7%
12.7
American Indian and Alaska Native
1,315
0.3%
0.8
Asian
22,224
4.7%
5.4
Asian Indian
4,569
1.0%
1.2
Chinese
2,253
0.5%
1.3
Filipino
1,393
0.3%
0.9
Japanese
609
0.1%
0.2
Korean
550
0.1%
0.4
Vietnamese
1,894
0.4%
0.6
Other Asian
10,956
2.3%
0.8
Native Hawaiian and Other Pacific Islander
150
0.0%
0.2
Native Hawaiian
0.1
Guamanian or Chamorro
0.0
Samoan
0.0
Other Pacific Islander
0.1
Some Other Race
8,740
1.8%
5.1
Two or More Races
13,073
2.8%
3.2
Hispanic Statistics
Number
Percent
National Avg
Hispanic or Latino (of any race)
38,925
8.2%
17.8
Mexican
28,111
5.9%
11.2
Puerto Rican
1,927
0.4%
1.7
Cuban
324
0.1%
0.7
Other Hispanic or Latino
8,563
1.8%
4.2
Not Hispanic or Latino
435,120
91.8%
82.2
Polk County, IA Educational Attainment
Education Level
Number
Percent
National Avg
Less than 9th grade
13,158
4.2%
5.4
9th to 12th grade, no diploma
15,514
5.0%
7.2
High school graduate (includes equivalent)
74,309
23.7%
27.2
Some college, no degree
69,646
22.2%
20.6
Associate's Degree
28,364
9.1%
8.4
Bachelor's Degree
76,154
24.3%
19.3
Graduate or professional degree
35,895
11.5%
11.9
Education Summary
Number
Percent
National Avg
< High School Graduate
28,672
9.2%
12.6
High School Graduate or Higher
284,368
90.8%
87.4
Bachelor's Degree or Higher
112,049
35.8%
31.2
Polk County, IA Marital Status
Marital Status
Number
Percent
National Avg
Never Married
123,666
33.1%
33.7%
Now Married
178,620
47.8%
47.5
Divorced
49,181
13.2%
11.0%
Separated
4,336
1.2%
2.0
Widowed
17,740
4.7
5.8%
Polk County, IA Language Spoken at Home
Language
Number
Percent
National Avg
English Only
383,759
87.4%
78.4%
Languages other than english
55,495
12.6%
21.6%
Spanish
25,344
5.8%
13.3%
Other indo-european languages
13,434
3.1%
3.7%
Asian and Pacific islander languages
11,323
2.6%
3.5%
Other Languages
5,394
1.2%
1.1%
Polk County, IA Household Income
Household Income
Number
Percent
National Avg
Less than $10,000
8,557
4.7%
6.7
$10,000 to $14,999
5,961
3.3%
4.8
$15,000 to $24,999
15,527
8.5%
9.7
$25,000 to $34,999
16,543
9.1%
9.5
$35,000 to $49,999
25,314
13.9%
13.0
$50,000 to $74,999
34,125
18.7%
17.7
$75,000 to $99,999
27,122
14.9%
12.3
$100,000 to $149,000
27,902
15.3%
14.0
$150,000 to $199,999
11,045
6.1%
5.8
$200,000 or more
10,441
5.7%
6.4
Median household income
64,067
57,617
Per capita income
32,885
31,128
Polk County, IA Employment Breakdown
Industry
Number
Percent
National Avg
Agriculture, forestry, fishing, hunting and mining
3,037
1.2%
1.7
Arts, entertainment, recreation, accommodation and food services
22,273
8.8%
9.8
Construction
16,639
6.6%
6.4
Educational services, health care and social assistance
49,317
19.4%
23.0
Finance, insurance, real estate, rental, and leasing
40,852
16.1%
6.6
Information
4,923
1.9%
2.1
Manufacturing
17,941
7.1%
10.1
Other services except public administration
12,364
4.9%
4.9
Professional, scientific, management, administrative and waste management services
26,059
10.3%
11.4
Public administration
9,313
3.7%
4.6
Retail trade
29,859
11.8%
11.5
Transportation, warehousing and utilities
12,217
4.8%
5.2
Wholesale trade
9,101
3.6%
2.7
Occupation
Number
Percent
National Avg
Construction, extraction, maintenance, and repair occupations
20,317
8.0%
8.8%
Management, professional, and related occupations
102,962
40.6%
37.6%
Production, transportation, and material moving occupations
26,459
10.4%
12.2%
Sales and office occupations
62,463
24.6%
23.3%
Service occupations
41,694
16.4%
18.1%
Polk County, IA Commute Statistics
Commute Type
Number
Percent
National Avg
Workers 16 Years and over
248,427
Car, truck, or van - drove alone
210,119
84.6%
76.3
Car, truck, or van - carpooled
17,871
7.2%
9.0
Public transportation (excluding taxicab)
3,801
1.5%
5.1
Walked
4,981
2.0%
2.7
Other means
2,396
1.0%
1.8
Worked at home
9,259
3.7%
5.0
Mean travel time to work (Minutes)
19.1
26.6
Polk County, IA Vehicles per Household
Vehicles per Household
Number
Percent
National Avg
None
10,891
6.0%
8.7
1 vehicles
56,841
31.1%
33.2
2 vehicles
75,174
41.2%
37.1
3 or more
39,631
21.7%
21.0
Polk County, IA Housing Occupancy
Housing Occupancy
Number
Percent
National Avg
Total Housing Units
Occupied Housing Units
182,537
92.8%
87.6
Owner Occupied
122,351
67.0%
63.1
Renter Occupied
60,186
33.0%
36.9
Vacant Housing Units
14,142
7.2%
12.4
Homeowner Vacancy Rate
1
0.0%
0.0
Rental Vacancy Rate
6
0.0%
0.0
Average household size of owner-occupied unit
2.7
0.0%
2.7
Average household size of renter-occupied unit
2.4
0.0%
2.5
Polk County, IA Rooms per Residence
Rooms per Residence
Number
Percent
National Avg
Total Housing Units
196,679
1 room
3,777
1.9%
2.4
2 rooms
7,083
3.6%
2.7
3 rooms
16,597
8.4%
9.1
4 rooms
36,737
18.7%
16.5
5 rooms
37,169
18.9%
19.8
6 rooms
30,070
15.3%
17.8
7 rooms
22,782
11.6%
12.0
8 rooms
16,438
8.4%
8.6
9 rooms or more
26,026
13.2%
11.1
Median Rooms
5
0.0
Polk County, IA Structure Type Statistics
Structure Type
Number
Percent
National Avg
Total Housing Units
196,679
1-unit, detached
128,787
65.5%
61.5
1-unit, attached
15,608
7.9%
5.9
2-units
2,122
1.1%
3.6
3 or 4 units
3,161
1.6%
4.4
5 to 9 units
8,115
4.1%
4.8
10 to 19 units
10,859
5.5%
4.4
20 or more units
24,281
12.3%
9.0
Mobile home
3,612
1.8%
6.2
Boat, RV, van, etc.
134
0.1%
0.1
Polk County, IA Housing Age Statistics
Housing Age
Number
Percent
National Avg
1939 or earlier
28,633
14.6%
12.8%
1940 to 1949
10,632
5.4%
5.0%
1950 to 1959
22,025
11.2%
10.4%
1960 to 1969
17,812
9.1%
10.7%
1970 to 1979
26,606
13.5%
15.3%
1980 to 1989
20,306
10.3%
13.5%
1990 to 1999
26,528
13.5%
13.9%
2000 to 2009
28,635
14.6%
14.2%
2010 to 2013
9,126
4.6%
2.8%
2014 or later
6,376
3.2%
1.4%
Polk County, IA Household Heating
Heating Fuel Type
Number
Percent
National Avg
Utility Gas
124,367
68.1%
48.1
Bottled, tank, or LP gas
3,736
2.0%
4.7
Electricity
51,993
28.5%
38.7
Fuel oil, kerosene, etc.
0
0.0%
4.8
Coal or coke
37
0.0%
0.1
Wood
486
0.3%
1.9
Solar energy
0
0.0%
0.1
Other fuel
1,328
0.7%
0.5
No fuel used
590
0.3%
1.1
Polk County, IA Mortgage Statistics
Mortgage Payments
Number
Percent
National Avg
Housing units with a mortgage
86,276
47295100.0
Less than $500
715
0.8%
1.6%
$3,000 or more
2,728
3.2%
10.3%
$2,500 to $2,999
3,151
3.7%
7.0%
$2,000 to $2,499
7,423
8.6%
11.8%
$500 to $999
16,870
19.6%
20.4%
$1,500 to $1,999
21,663
25.1%
20.1%
$1,000 to $1,499
33,726
39.1%
28.8%
Mortgage Payment as % of Income
Number
Percent
National Avg
Less than 20.0%
45,053
52.3%
45.4%
20.0% to 24.9%
14,596
16.9%
15.7%
25.0% to 29.9%
7,187
8.3%
10.6%
30.0% to 34.9%
6,763
7.9%
7.0%
35.0% or more
12,552
14.6%
21.3%
Not Computed
125
0.0%
0.0%
Polk County, IA Rent Statistics
Rent Payment Amount
Number
Percent
National Avg
Occupied Units Paying Rent
58,808
41,631,300
$2,500 to $2,999
221
0.4%
1.9%
$3,000 or more
386
0.7%
1.8%
$2,000 to $2,499
470
0.8%
4.4%
$1,500 to $1,999
2,084
3.5%
11.9%
Less than $500
4,098
7.0%
10.7%
$1,000 to $1,499
14,402
24.5%
28.3%
$500 to $999
37,147
63.2%
41.0%
No Cash Rent
1,378
0.0%
2,206,240
Median (Dollars)
850
0.0%
981
Rent Payment as % of Income
Number
Percent
National Avg
Less than 15.0%
8,234
14.2%
13.1%
15.0% to 19.9%
8,322
14.4%
12.9%
20.0% to 24.9%
8,232
14.2%
12.8%
25.0% to 29.9%
7,037
12.1%
11.5%
30.0% to 34.9%
4,514
7.8%
9.0%
35.0% or more
21,586
37.3%
40.7%
Not Computed
2,261
0.0%
0.0%
Polk County, IA Property Value
Property Type
Number
Percent
National Avg
Specified Owner-Occupied Units
122,351
75,022,600
Less then $50,000
4,923
4.0%
7.3%
$50,000 to $99,999
16,122
13.2%
7.3%
$100,000 to $149,000
26,598
21.7%
14.1%
$150,000 to $199,000
28,723
23.5%
14.5%
$200,000 to $299,999
27,790
22.7%
19.2%
$300,000 to $499,999
13,959
11.4%
18.2%
$500,000 to $999,999
3,610
3.0%
10.5%
$1,000,000 or more
626
0.5%
3.1%
Median (Dollars)
171,800
205,000