42066 vs 42040 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 42066, Orange = ZIP 42040.
Quick verdict: ZIP 42066 is more diverse, more educated. ZIP 42040 is wealthier, higher home values, lower poverty rate, lower unemployment, higher work-from-home share.
Quick Facts
ZIP 42066
Mayfield city, KY
View full profile →- Population23,635
- Median Income$48,118
- Median Home Value$135k
- Median Rent$536
- Median Age38.9 yrs
- Poverty Rate22.1%
ZIP 42040
Farmington CDP, KY
View full profile →- Population983
- Median Income$61,458
- Median Home Value$183k
- Median Rent—
- Median Age42.4 yrs
- Poverty Rate16.2%
Visual comparison (same scale)
Population
23,635983
Median Income
$48,118$61,458
Median Home Value
$135k$183k
Median Rent
$536—
Median Age
38.9 yrs42.4 yrs
Poverty Rate
22.1%16.2%
Demographics
ZIP 42066
Mayfield city, KY
View full profile →- White %82.9%
- Black %5.8%
- Asian %0.3%
- Hispanic %10.6%
- Age 0–17 %25.3%
- Age 18–64 %56.1%
- Age 65+ %18.6%
- Bachelor's+ %18.2%
- Diversity Index30/100
ZIP 42040
Farmington CDP, KY
View full profile →- White %87.7%
- Black %0.0%
- Asian %0.0%
- Hispanic %2.9%
- Age 0–17 %25.2%
- Age 18–64 %58.3%
- Age 65+ %16.5%
- Bachelor's+ %10.2%
- Diversity Index22/100
Visual comparison (same scale)
White %
82.9%87.7%
Black %
5.8%0.0%
Asian %
0.3%0.0%
Hispanic %
10.6%2.9%
Age 0–17 %
25.3%25.2%
Age 18–64 %
56.1%58.3%
Age 65+ %
18.6%16.5%
Bachelor's+ %
18.2%10.2%
Diversity Index
30/10022/100
Economy
ZIP 42066
Mayfield city, KY
View full profile →- Median Income$48,118
- Unemployment %3.3%
- IRS Net Migration+882
- Work From Home %8.1%
ZIP 42040
Farmington CDP, KY
View full profile →- Median Income$61,458
- Unemployment %0.7%
- IRS Net Migration+37
- Work From Home %10.3%
Visual comparison (same scale)
Median Income
$48,118$61,458
Unemployment %
3.3%0.7%
IRS Net Migration
+882+37
Work From Home %
8.1%10.3%
Housing
ZIP 42066
Mayfield city, KY
View full profile →- Median Home Value$135k
- Median Rent$536
- Owner Occupied %72.6%
- Broadband %82.0%
- Vacant %13.4%
- Median Year Built1976
ZIP 42040
Farmington CDP, KY
View full profile →- Median Home Value$183k
- Median Rent—
- Owner Occupied %90.5%
- Broadband %86.8%
- Vacant %17.8%
- Median Year Built1983
Visual comparison (same scale)
Median Home Value
$135k$183k
Median Rent
$536—
Owner Occupied %
72.6%90.5%
Broadband %
82.0%86.8%
Vacant %
13.4%17.8%
Median Year Built
19761983
Climate & Location
ZIP 42066
Mayfield city, KY
View full profile →- Snow Days/Year0 days
- Elevation (ft)365 ft
- Nearest Airport23.9 miles (38.4 km)
- Distance to Coast335.2 miles (539.5 km)
ZIP 42040
Farmington CDP, KY
View full profile →- Snow Days/Year0 days
- Elevation (ft)527 ft
- Nearest Airport33.8 miles (54.3 km)
- Distance to Coast342.0 miles (550.5 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
365 ft527 ft
Nearest Airport
23.9 miles (38.4 km)33.8 miles (54.3 km)
Distance to Coast
335.2 miles (539.5 km)342.0 miles (550.5 km)
Infrastructure
ZIP 42066
Mayfield city, KY
View full profile →- Work From Home %8.1%
- Walkability (0–100)26
- Broadband %82.0%
ZIP 42040
Farmington CDP, KY
View full profile →- Work From Home %10.3%
- Walkability (0–100)17
- Broadband %86.8%
Visual comparison (same scale)
Work From Home %
8.1%10.3%
Walkability (0–100)
2617
Broadband %
82.0%86.8%
Frequently Asked Questions
How do ZIP 42066 and 42040 compare?
ZIP 42066 is more diverse, more educated. ZIP 42040 is wealthier, higher home values, lower poverty rate, lower unemployment, higher work-from-home share.
What do the blue and orange colors mean?
Blue represents the first ZIP (42066), orange the second (42040). 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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