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 1,397 as of July 1, 2017. 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, 2017.

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Town of Dauphin Island, AL Boundary Map

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Dauphin Island, AL Data & Demographics (As of July 1, 2017)


Total Population 1,397
Daytime Population: Workers 518
Daytime Population: Residents 790
Total Daytime Population (TDP) 1,308
Ratio TDP/Total Population1 0.94
Population in Households 1,383
Population in Familes 1,062
Population in Group Qrtrs 14
Population Density2 223
Diversity Index3 8


Median Household Income $61,526
Average Household Income $84,670
Per Capita Income $40,287


Total Housing Units 2,004 (100%)
Owner Occupied HU 537 (26.8%)
Renter Occupied HU 126 ( 6.3%)
Vacant Housing Units 1,341 (66.9%)
Median Home Value $259,589
Average Home Value $314,366


Total Households 663
Average Household Size 2.09
Family Households 418
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 1.68% 1.15%
Households 1.81% 1.21%
Families 1.58% 1.03%
Median Household Income   2.67%
Per Capita Income   3.04%

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, 2017 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 # 264 55th
Population Density # 307 47th
Diversity Index # 563 3rd
Median Household Income # 41 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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