Alachua County vs St. Johns County

A side-by-side comparison of Alachua County and St. Johns County: population, income, housing, and more.

Alachua County and St. Johns County are counties in Florida. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

St. Johns County has the higher population (292,243 vs 281,751 in Alachua County). St. Johns County has the higher median household income ($106,169 vs $59,659 in Alachua County). St. Johns County has the higher median home value ($457,600 vs $266,800 in Alachua County).

Population, income & housing

	Alachua County	St. Johns County
Population	281,751	292,243
Median age	32.2 yrs	44.0 yrs
Median household income	$59,659	$106,169
Median home value	$266,800	$457,600
Median gross rent	$1,255	$1,775
Housing units	125,702	127,144
Homeownership rate	54.1%	82.1%
Bachelor's degree or higher	47.7%	48.6%
Unemployment rate	4.3%	3.9%

Trends (ACS 5-year, 2019–2023)

	Alachua County	St. Johns County
Population	265,443 → 281,751 (+6.1%)	244,674 → 292,243 (+19.4%)
Median household income	$49,689 → $59,659 (+20.1%)	$82,252 → $106,169 (+29.1%)
Median home value	$186,700 → $266,800 (+42.9%)	$304,700 → $457,600 (+50.2%)
Median gross rent	$983 → $1,255 (+27.7%)	$1,312 → $1,775 (+35.3%)

Alachua County

Population

265,443281,751

Median household income

$49,689$59,659

Median home value

$186,700$266,800

Median gross rent

$983$1,255

St. Johns County

Population

244,674292,243

Median household income

$82,252$106,169

Median home value

$304,700$457,600

Median gross rent

$1,312$1,775

Age & race/ethnicity

Age distribution (share)

	Alachua County	St. Johns County
Under 5	4.8%	4.6%
5 to 17	13.1%	17.1%
18 to 24	21.1%	6.7%
25 to 34	14.7%	9.1%
35 to 44	11.6%	13.6%
45 to 54	9.6%	13.8%
55 to 64	10.2%	14.1%
65 to 74	9.0%	12.5%
75 and over	5.9%	8.4%

Race & ethnicity (share)

	Alachua County	St. Johns County
White (non-Hispanic)	58.3%	78.6%
Black or African American	19.0%	4.9%
American Indian & Alaska Native	0.1%	0.1%
Asian	5.8%	3.4%
Native Hawaiian & Pacific Islander	0.0%	0.1%
Some other race	0.7%	0.5%
Two or more races	3.8%	3.8%
Hispanic or Latino	12.2%	8.7%

Educational attainment (age 25+)

Share of adults 25+

	Alachua County	St. Johns County
No high school diploma	5.8%	4.9%
High school graduate	19.8%	19.4%
Some college or associate's	26.7%	27.1%
Bachelor's degree	22.9%	30.2%
Graduate or professional degree	24.7%	18.4%

Commute to work

How workers get to work (share)

	Alachua County	St. Johns County
Drove alone	69.9%	66.6%
Carpooled	8.4%	6.7%
Public transit	2.9%	0.1%
Walked	3.2%	0.8%
Bicycle	1.9%	0.5%
Worked from home	12.1%	23.7%
Other means	1.7%	1.6%

Housing

Units in structure (share)

	Alachua County	St. Johns County
1-unit, detached	50.7%	72.0%
1-unit, attached	4.5%	5.1%
2 to 4 units	9.0%	4.2%
5 to 19 units	17.2%	8.9%
20 or more units	11.9%	4.5%
Mobile home & other	6.7%	5.4%

Poverty & households

	Alachua County	St. Johns County
Poverty rate	19.7%	6.7%
Average household size	2.33	2.66
Mean commute (minutes)	22	27
Median year structure built	1987	2002