94534 vs 40020 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 94534, Orange = ZIP 40020.
Quick verdict: ZIP 94534 is wealthier, more diverse, more educated, higher work-from-home share. ZIP 40020 is lower poverty rate, lower unemployment.
Quick Facts
ZIP 94534
Fairfield city, CA
View full profile →- Population41,122
- Median Income$139,349
- Median Home Value$701k
- Median Rent$2,456
- Median Age41.4 yrs
- Poverty Rate6.0%
ZIP 40020
Fairfield city, KY
View full profile →- Population197
- Median Income$87,951
- Median Home Value—
- Median Rent—
- Median Age59.9 yrs
- Poverty Rate1.0%
Visual comparison (same scale)
Population
41,122197
Median Income
$139,349$87,951
Median Home Value
$701k—
Median Rent
$2,456—
Median Age
41.4 yrs59.9 yrs
Poverty Rate
6.0%1.0%
Demographics
ZIP 94534
Fairfield city, CA
View full profile →- White %42.8%
- Black %12.2%
- Asian %24.4%
- Hispanic %17.4%
- Age 0–17 %22.4%
- Age 18–64 %59.0%
- Age 65+ %18.6%
- Bachelor's+ %40.1%
- Diversity Index71/100
ZIP 40020
Fairfield city, KY
View full profile →- White %98.5%
- Black %0.0%
- Asian %0.0%
- Hispanic %0.0%
- Age 0–17 %3.0%
- Age 18–64 %63.5%
- Age 65+ %33.5%
- Bachelor's+ %6.5%
- Diversity Index3/100
Visual comparison (same scale)
White %
42.8%98.5%
Black %
12.2%0.0%
Asian %
24.4%0.0%
Hispanic %
17.4%0.0%
Age 0–17 %
22.4%3.0%
Age 18–64 %
59.0%63.5%
Age 65+ %
18.6%33.5%
Bachelor's+ %
40.1%6.5%
Diversity Index
71/1003/100
Economy
ZIP 94534
Fairfield city, CA
View full profile →- Median Income$139,349
- Unemployment %3.8%
- IRS Net Migration+2,024
- Work From Home %15.9%
- Mean Commute (min)—
ZIP 40020
Fairfield city, KY
View full profile →- Median Income$87,951
- Unemployment %3.6%
- IRS Net Migration+7
- Work From Home %1.9%
- Mean Commute (min)52 min
Visual comparison (same scale)
Median Income
$139,349$87,951
Unemployment %
3.8%3.6%
IRS Net Migration
+2,024+7
Work From Home %
15.9%1.9%
Mean Commute (min)
—52 min
Housing
ZIP 94534
Fairfield city, CA
View full profile →- Median Home Value$701k
- Median Rent$2,456
- Owner Occupied %76.2%
- Broadband %94.4%
- Vacant %3.6%
- Median Year Built1994
ZIP 40020
Fairfield city, KY
View full profile →- Median Home Value—
- Median Rent—
- Owner Occupied %89.8%
- Broadband %92.2%
- Vacant %0.0%
- Median Year Built1972
Visual comparison (same scale)
Median Home Value
$701k—
Median Rent
$2,456—
Owner Occupied %
76.2%89.8%
Broadband %
94.4%92.2%
Vacant %
3.6%0.0%
Median Year Built
19941972
Climate & Location
ZIP 94534
Fairfield city, CA
View full profile →- Snow Days/Year0 days
- Elevation (ft)40 ft
- Nearest Airport11.3 miles (18.3 km)
- Distance to Coast3.6 miles (5.8 km)
ZIP 40020
Fairfield city, KY
View full profile →- Snow Days/Year0 days
- Elevation (ft)700 ft
- Nearest Airport25.0 miles (40.2 km)
- Distance to Coast270.3 miles (435.1 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
40 ft700 ft
Nearest Airport
11.3 miles (18.3 km)25.0 miles (40.2 km)
Distance to Coast
3.6 miles (5.8 km)270.3 miles (435.1 km)
Infrastructure
ZIP 94534
Fairfield city, CA
View full profile →- Mean Commute (min)—
- Work From Home %15.9%
- Walkability (0–100)40
- Broadband %94.4%
ZIP 40020
Fairfield city, KY
View full profile →- Mean Commute (min)52 min
- Work From Home %1.9%
- Walkability (0–100)—
- Broadband %92.2%
Visual comparison (same scale)
Mean Commute (min)
—52 min
Work From Home %
15.9%1.9%
Walkability (0–100)
40—
Broadband %
94.4%92.2%
Frequently Asked Questions
How do ZIP 94534 and 40020 compare?
ZIP 94534 is wealthier, more diverse, more educated, higher work-from-home share. ZIP 40020 is lower poverty rate, lower unemployment.
What do the blue and orange colors mean?
Blue represents the first ZIP (94534), orange the second (40020). The same colors are used in the map markers and comparison bars.
Where does this data come from?
Data is from the U.S. Census Bureau and other federal sources. See our Methodology page for details.
How can I compare other ZIP codes?
From any ZIP page, use the "Compare with Another ZIP" tool, or go to /compare/XXXXX-vs-YYYYY (replace with two 5-digit ZIP codes).
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