Derby vs Williamson

A side-by-side comparison of Derby and Williamson: population, income, housing, and more.

Derby and Williamson are places in Iowa. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Williamson has the higher population (228 vs 106 in Derby). Derby has the higher median household income ($58,750 vs $53,438 in Williamson). Derby has the higher median home value ($73,800 vs $47,500 in Williamson).

Population, income & housing

	Derby	Williamson
Population	106	228
Median age	38.8 yrs	34.2 yrs
Median household income	$58,750	$53,438
Median home value	$73,800	$47,500
Housing units	47	90
Homeownership rate	94.3%	88.6%
Bachelor's degree or higher	1.4%	0.0%
Unemployment rate	0.0%	7.2%

Trends (ACS 5-year, 2019–2023)

	Derby	Williamson
Population	127 → 106 (-16.5%)	179 → 228 (+27.4%)
Median household income	$40,833 → $58,750 (+43.9%)	$52,917 → $53,438 (+1.0%)
Median home value	$45,800 → $73,800 (+61.1%)	$53,100 → $47,500 (-10.5%)

Derby

Population

127106

Median household income

$40,833$58,750

Median home value

$45,800$73,800

Williamson

Population

179228

Median household income

$52,917$53,438

Median home value

$53,100$47,500

Age & race/ethnicity

Age distribution (share)

	Derby	Williamson
Under 5	16.0%	14.0%
5 to 17	18.9%	20.2%
18 to 24	0.0%	2.6%
25 to 34	6.6%	14.9%
35 to 44	23.6%	14.9%
45 to 54	1.9%	7.0%
55 to 64	6.6%	9.6%
65 to 74	14.2%	14.0%
75 and over	12.3%	2.6%

Race & ethnicity (share)

	Derby	Williamson
White (non-Hispanic)	99.1%	90.4%
Black or African American	0.0%	0.0%
American Indian & Alaska Native	0.0%	0.0%
Asian	0.0%	0.4%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.0%
Two or more races	0.9%	0.0%
Hispanic or Latino	0.0%	9.2%

Educational attainment (age 25+)

Share of adults 25+

	Derby	Williamson
No high school diploma	29.0%	15.3%
High school graduate	39.1%	49.3%
Some college or associate's	30.4%	35.4%
Bachelor's degree	1.4%	0.0%
Graduate or professional degree	0.0%	0.0%

Commute to work

How workers get to work (share)

	Derby	Williamson
Drove alone	60.0%	84.4%
Carpooled	20.0%	15.6%
Public transit	7.5%	0.0%
Walked	0.0%	0.0%
Bicycle	0.0%	0.0%
Worked from home	12.5%	0.0%
Other means	0.0%	0.0%

Housing

Units in structure (share)

	Derby	Williamson
1-unit, detached	85.1%	84.4%
1-unit, attached	0.0%	0.0%
2 to 4 units	0.0%	1.1%
5 to 19 units	0.0%	0.0%
20 or more units	0.0%	0.0%
Mobile home & other	14.9%	14.4%

Poverty & households

	Derby	Williamson
Poverty rate	34.0%	26.8%
Average household size	3.03	2.89
Mean commute (minutes)	40	32
Median year structure built	1938	1938