Mill Creek vs Rockhill

A side-by-side comparison of Mill Creek and Rockhill: population, income, housing, and more.

Mill Creek and Rockhill are places in Pennsylvania. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Rockhill has the higher population (380 vs 290 in Mill Creek). Rockhill has the higher median household income ($74,375 vs $45,000 in Mill Creek). Rockhill has the higher median home value ($142,500 vs $112,500 in Mill Creek).

Population, income & housing

	Mill Creek	Rockhill
Population	290	380
Median age	35.0 yrs	49.0 yrs
Median household income	$45,000	$74,375
Median home value	$112,500	$142,500
Median gross rent	$817	$1,102
Housing units	114	146
Homeownership rate	73.1%	79.4%
Bachelor's degree or higher	3.6%	10.6%
Unemployment rate	2.8%	2.0%

Trends (ACS 5-year, 2019–2023)

	Mill Creek	Rockhill
Population	312 → 290 (-7.1%)	401 → 380 (-5.2%)
Median household income	$36,667 → $45,000 (+22.7%)	$50,625 → $74,375 (+46.9%)
Median home value	$85,700 → $112,500 (+31.3%)	$86,500 → $142,500 (+64.7%)
Median gross rent	$630 → $817 (+29.7%)	—

Mill Creek

Population

312290

Median household income

$36,667$45,000

Median home value

$85,700$112,500

Median gross rent

$630$817

Rockhill

Population

401380

Median household income

$50,625$74,375

Median home value

$86,500$142,500

Age & race/ethnicity

Age distribution (share)

	Mill Creek	Rockhill
Under 5	2.4%	3.2%
5 to 17	21.4%	18.9%
18 to 24	9.0%	3.7%
25 to 34	17.2%	2.4%
35 to 44	10.3%	12.9%
45 to 54	9.0%	18.9%
55 to 64	15.2%	20.3%
65 to 74	4.5%	8.7%
75 and over	11.0%	11.1%

Race & ethnicity (share)

	Mill Creek	Rockhill
White (non-Hispanic)	97.2%	95.5%
Black or African American	0.0%	3.9%
American Indian & Alaska Native	0.0%	0.0%
Asian	0.0%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.3%	0.0%
Two or more races	1.4%	0.5%
Hispanic or Latino	1.0%	0.0%

Educational attainment (age 25+)

Share of adults 25+

	Mill Creek	Rockhill
No high school diploma	12.3%	14.2%
High school graduate	64.6%	55.0%
Some college or associate's	19.5%	20.2%
Bachelor's degree	1.5%	3.5%
Graduate or professional degree	2.1%	7.1%

Commute to work

How workers get to work (share)

	Mill Creek	Rockhill
Drove alone	90.0%	71.4%
Carpooled	10.0%	22.1%
Public transit	0.0%	0.0%
Walked	0.0%	2.5%
Bicycle	0.0%	0.0%
Worked from home	0.0%	4.0%
Other means	0.0%	0.0%

Housing

Units in structure (share)

	Mill Creek	Rockhill
1-unit, detached	78.1%	89.7%
1-unit, attached	3.5%	0.0%
2 to 4 units	3.5%	2.7%
5 to 19 units	9.6%	0.0%
20 or more units	0.0%	0.0%
Mobile home & other	5.3%	7.5%

Poverty & households

	Mill Creek	Rockhill
Poverty rate	7.6%	5.6%
Average household size	2.79	2.90
Mean commute (minutes)	32	39
Median year structure built	1955	1951