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Best Cities for Pet breeding in Maine

Top 20 ZIP codes ranked by opportunity score. Score combines walkability (foot traffic), population density, median income, and food truck competition.

80–100 Excellent 60–79 Good 40–59 Fair <40 Challenging

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#	ZIP Code	Score	Walkability	Median Income
#1	ZIP 04021 Pop. 6.6 Thousand	100 Excellent	—	$145,833
#2	ZIP 03908 Pop. 7.4 Thousand	88 Excellent	—	$97,927
#3	ZIP 04358 Pop. 4.5 Thousand	86 Excellent	—	$93,825
#4	ZIP 04107 Pop. 9.6 Thousand	85 Excellent	11.2 /20	$145,464
#5	ZIP 04469 Pop. 3.3 Thousand	84 Excellent	—	—
#6	ZIP 04009 Pop. 5.4 Thousand	82 Excellent	—	$86,386
#7	ZIP 03902 Pop. 2.5 Thousand	82 Excellent	—	$131,538
#8	ZIP 04259 Pop. 3.5 Thousand	80 Excellent	—	$94,868
#9	ZIP 04093 Pop. 8.5 Thousand	80 Excellent	—	$85,208
#10	ZIP 04364 Pop. 6.2 Thousand	80 Excellent	—	$82,858
#11	ZIP 04220 Pop. 3.8 Thousand	80 Excellent	—	$89,036
#12	ZIP 04008 Pop. 3.1 Thousand	80 Excellent	—	$104,914
#13	ZIP 04032 Pop. 8.7 Thousand	77 Good	8.4 /20	$108,864
#14	ZIP 04106 Pop. 27 Thousand	76 Good	13.9 /20	$83,744
#15	ZIP 04864 Pop. 4.9 Thousand	76 Good	—	$77,321
#16	ZIP 04002 Pop. 7.7 Thousand	76 Good	—	$77,853
#17	ZIP 04097 Pop. 4.2 Thousand	76 Good	5.7 /20	$119,813
#18	ZIP 04110 Pop. 1.9 Thousand	74 Good	—	$187,857
#19	ZIP 04862 Pop. 4.2 Thousand	74 Good	—	$71,546
#20	ZIP 04250 Pop. 4.8 Thousand	74 Good	—	$71,903

Data updated March 2026. Sources: Census Bureau ACS 2023, USDA National Walkability Index 2021, County Business Patterns 2022.

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