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Dauphin Island, AL vs Semmes, AL

116
Dauphin Island
Alabama
VS
+53.3%
76
Semmes
Alabama

The cost of living difference between Dauphin Island, AL and Semmes, AL is dramatic. Semmes is 53.3% cheaper than Dauphin Island, a gap that translates to thousands of dollars per year in household expenses. Dauphin Island has a cost index of 116 while Semmes sits at 76, making this one of the more striking comparisons on our site. Relocating between these cities would require a serious reassessment of budget and lifestyle expectations.

On the housing front, median rent in Dauphin Island is $1,750/month compared to $898/month in Semmes — a 95% difference. Home values follow the same pattern: Semmes is more affordable at $211,100 median vs $387,400.

Median household income in Dauphin Island is $64,615 compared to $66,458 in Semmes (-2.8%). Semmes offers a double advantage: higher earnings combined with a lower cost of living, giving residents significantly more purchasing power. Looking at affordability, residents of Dauphin Island spend roughly 32.5% of their income on rent, more than the 16.2% in Semmes. The Semmes ratio exceeds the commonly recommended 30% threshold, which can put pressure on household budgets.

Climate-wise, both cities share similar average temperatures (67.8°F vs 67.6°F). Semmes receives more rainfall at 67.1" per year compared to 61.7" in Dauphin Island.

Income & Cost

Cost of Living Index
Dauphin Island
116
Semmes
76
35% cheaper
Median Household Income
Dauphin Island
$64,615
Semmes
$66,458
3% higher

Housing

Median Rent
Dauphin Island
$1,750
Semmes
$898
49% cheaper
Median Home Value
Dauphin Island
$387,400
Semmes
$211,100
46% cheaper
Population
Dauphin Island
1,944
Semmes
5,404

Salary Equivalency Calculator

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Rent by Bedroom Size

HUD Fair Market Rent (FY 2026) — metro area average

Studio
Dauphin Island $841
Semmes $841
1 Bed
Dauphin Island $909
Semmes $909
2 Bed
Dauphin Island $1,079
Semmes $1,079
3 Bed
Dauphin Island $1,411
Semmes $1,411
4 Bed
Dauphin Island $1,441
Semmes $1,441

Everyday Prices

BLS Average Prices by metro area

Gasoline (regular)
Dauphin Island $2.90
Semmes $2.90
US $3.07
🥚
Eggs (grade A, large)
Dauphin Island $2.37
Semmes $2.37
US $2.50
🥛
Milk (whole)
Dauphin Island $3.81
Semmes $3.81
US $4.03
🍞
Bread (white)
Dauphin Island $1.75
Semmes $1.75
US $1.85
🍗
Chicken breast
Dauphin Island $3.92
Semmes $3.92
US $4.14
Electricity
Dauphin Island $0.17
Semmes $0.17
US $0.19

Climate

NOAA 30-year normals (1991-2020)

Avg Temp
Dauphin Island 67.8°F
Semmes 67.6°F
Summer High
Dauphin Island 91°F
Semmes 91°F
Winter Low
Dauphin Island 41°F
Semmes 41°F
Rainfall
Dauphin Island 61.7"
Semmes 67.1"
Rainy Days
Dauphin Island 118d
Semmes 117d