Bismarck vs Potomac

A side-by-side comparison of Bismarck and Potomac: population, income, housing, and more.

Bismarck and Potomac are places in Illinois. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Potomac has the higher population (612 vs 510 in Bismarck). Bismarck has the higher median household income ($76,875 vs $52,404 in Potomac). Bismarck has the higher median home value ($110,300 vs $79,600 in Potomac).

Population, income & housing

	Bismarck	Potomac
Population	510	612
Median age	42.5 yrs	39.3 yrs
Median household income	$76,875	$52,404
Median home value	$110,300	$79,600
Median gross rent	$817	$742
Housing units	223	278
Homeownership rate	86.2%	82.4%
Bachelor's degree or higher	22.1%	10.8%
Unemployment rate	5.6%	3.9%

Trends (ACS 5-year, 2019–2023)

	Bismarck	Potomac
Population	616 → 510 (-17.2%)	804 → 612 (-23.9%)
Median household income	$65,625 → $76,875 (+17.1%)	$50,341 → $52,404 (+4.1%)
Median home value	$95,600 → $110,300 (+15.4%)	$76,400 → $79,600 (+4.2%)
Median gross rent	$750 → $817 (+8.9%)	$641 → $742 (+15.8%)

Bismarck

Population

616510

Median household income

$65,625$76,875

Median home value

$95,600$110,300

Median gross rent

$750$817

Potomac

Population

804612

Median household income

$50,341$52,404

Median home value

$76,400$79,600

Median gross rent

$641$742

Age & race/ethnicity

Age distribution (share)

	Bismarck	Potomac
Under 5	5.9%	8.0%
5 to 17	20.0%	23.9%
18 to 24	4.1%	5.9%
25 to 34	11.2%	9.8%
35 to 44	14.7%	12.7%
45 to 54	17.6%	13.1%
55 to 64	9.6%	9.2%
65 to 74	8.4%	11.3%
75 and over	8.4%	6.2%

Race & ethnicity (share)

	Bismarck	Potomac
White (non-Hispanic)	94.3%	85.6%
Black or African American	0.0%	0.0%
American Indian & Alaska Native	0.0%	0.0%
Asian	1.2%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.0%
Two or more races	2.5%	2.9%
Hispanic or Latino	2.0%	11.4%

Educational attainment (age 25+)

Share of adults 25+

	Bismarck	Potomac
No high school diploma	1.4%	8.9%
High school graduate	19.3%	46.7%
Some college or associate's	57.1%	33.6%
Bachelor's degree	10.9%	6.6%
Graduate or professional degree	11.2%	4.2%

Commute to work

How workers get to work (share)

	Bismarck	Potomac
Drove alone	87.7%	87.3%
Carpooled	4.7%	7.1%
Public transit	0.0%	0.0%
Walked	0.0%	0.7%
Bicycle	0.0%	0.0%
Worked from home	7.7%	3.7%
Other means	0.0%	1.1%

Housing

Units in structure (share)

	Bismarck	Potomac
1-unit, detached	95.5%	86.0%
1-unit, attached	0.9%	1.1%
2 to 4 units	0.9%	5.8%
5 to 19 units	0.0%	2.9%
20 or more units	0.0%	0.0%
Mobile home & other	2.7%	4.3%

Poverty & households

	Bismarck	Potomac
Poverty rate	10.3%	6.7%
Average household size	2.35	2.40
Mean commute (minutes)	24	30
Median year structure built	1970	1959