Dauphin Island, AL Profile: Facts, Map & Data


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Dauphin Island, Alabama - Basic Facts

The Town of Dauphin Island had a population of 1,337 as of July 1, 2016. Dauphin Island ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Alabama. See peer rankings below.

The primary coordinate point for Dauphin Island is located at latitude 30.2509 and longitude -88.1713 in Mobile County. The formal boundaries for the Town of Dauphin Island (see map below) encompass a land area of 6.26 sq. miles and a water area of 159.69 sq. miles. Mobile County is in the Central time zone (GMT -6). The elevation is 7 feet.

The Town of Dauphin Island (GNIS ID: 2406357) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Alabama is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Town of Dauphin Island is located within Bayou La Batre Division of Mobile County.

Beneath the boundary map are tables with Dauphin Island population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Neighborhood Data

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Town of Dauphin Island, AL Boundary Map

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Dauphin Island, AL Data & Demographics (As of July 1, 2016)


Total Population 1,337
Population in Households 1,323
Population in Familes 1,019
Population in Group Qrtrs 14
Population Density1 214
Diversity Index2 8


Total Households 637
Average Household Size 2.08
Family Households 405
Average Family Size 3


Total Housing Units 1,955 (100%)
Owner Occupied HU 521 (26.6%)
Renter Occupied HU 116 ( 5.9%)
Vacant Housing Units 1,318 (67.4%)
Median Home Value $254,286
Average Home Value $315,288


Median Household Income $58,554
Average Household Income $77,657
Per Capita Income $37,114
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 1.24% 0.93%
Households 1.46% 1.02%
Families 1.33% 0.92%
Median Household Income   1.45%
Per Capita Income   2.12%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Dauphin Island, AL - Peer Comparisons by Rank and Percentile

The table below compares Dauphin Island to the other 580 incorporated cities, towns and CDPs in Alabama by rank and percentile using July 1, 2016 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 271 53rd
Population Density1 # 328 44th
Diversity Index2 # 562 3rd
Median Household Income # 44 93rd
Per Capita Income # 12 98th

Additional comparisons and rankings can be made with a VERY EASY TO USE Alabama Census Data Comparison Tool.

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