When was Dallas County founded?

Dallas County was founded in 1818, formed from Monroe County and Montgomery County, and named after Alexander J. Dallas.

What is the county seat of Dallas County?

The county seat of Dallas County is Selma.

Is there an online parcel map for Dallas County?

Yes. Dallas County publishes a parcel map of 32,144 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Dallas County's boundary or name changed?

Dallas County was created in 1818 from Monroe County and Montgomery County. Since then the Atlas of Historical County Boundaries records 13 later changes, chiefly involving Perry County, Chilton County and Baker County.

Is my lot in a flood zone?

We do not have flood maps for Dallas County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

County · code 01047

Dallas CountyAlabama

Dallas County is a county in Alabama with its seat in Selma. The county was formed on February 9, 1818.

Founded1818
County seatSelma
Named forAlexander J. Dallas
Land area979 sq mi + 15 sq mi water
Population38,462 2020 Census
Parcels mapped32,144 checked 16 October 2026

Open the free map Click any parcel in Dallas County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated 19 October 2026

Census outline · seat marked

History

Formed in 1818 from Monroe County and Montgomery County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Dallas County was created by Alabama Territory from Monroe and Montgomery counties. The county was named after Alexander J. Dallas. Over the following decades, Dallas County underwent numerous boundary changes, losing territory to the creation of Cahawba (now Bibb), Butler, Perry, Wilcox, Lowndes, and Baker (now Chilton), while also gaining and losing small areas in exchanges with neighboring counties.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

1818
Dallas County created Dallas created by Alabama Territory from Monroe and Montgomery.
from Monroe from Montgomery
9 February 1818 · Ala. Terr. Acts 1818, 1st sess., sec. 1/p. 47
1818
Lost territory Dallas lost to Cahawba (now Bibb).
to Cahawbato Bibb
20 November 1818 · Ala. Terr. Acts 1818, 2d sess., p. 21
1818
Gained territory Dallas gained from Montgomery.
from Montgomery
21 November 1818 · Ala. Terr. Acts 1818, 2d sess., p. 76
1819
Gained territory Dallas gained from Montgomery, lost to Marengo and lost to creation of Butler, Perry, and Wilcox.
from Montgomery from Marengo from Butler from Perry from Wilcox
13 December 1819 · Ala. Acts 1819, 1st sess./pp. 50-57; Ala. Rpts., 215:640
1822
Lost territory Dallas lost to Wilcox.
to Wilcox
27 December 1822 · Ala. Acts 1822, 4th sess., p. 96

Show all 14 changes (9 more)

1818
Dallas County created Dallas created by Alabama Territory from Monroe and Montgomery.
from Monroe from Montgomery
9 February 1818 · Ala. Terr. Acts 1818, 1st sess., sec. 1/p. 47
1818
Lost territory Dallas lost to Cahawba (now Bibb).
to Cahawbato Bibb
20 November 1818 · Ala. Terr. Acts 1818, 2d sess., p. 21
1818
Gained territory Dallas gained from Montgomery.
from Montgomery
21 November 1818 · Ala. Terr. Acts 1818, 2d sess., p. 76
1819
Gained territory Dallas gained from Montgomery, lost to Marengo and lost to creation of Butler, Perry, and Wilcox.
from Montgomery from Marengo from Butler from Perry from Wilcox
13 December 1819 · Ala. Acts 1819, 1st sess./pp. 50-57; Ala. Rpts., 215:640
1822
Lost territory Dallas lost to Wilcox.
to Wilcox
27 December 1822 · Ala. Acts 1822, 4th sess., p. 96
1822
Lost territory Dallas lost to Perry.
to Perry
30 December 1822 · Ala. Acts 1822, 4th sess., p. 117
1830
Lost territory Dallas lost to creation of Lowndes.
to Lowndes
20 January 1830 · Ala. Acts 1829, 11th sess., p. 25
1840
Lost territory Dallas lost to Marengo.
to Marengo
4 February 1840 · Ala. Acts 1839, ann. sess., no. 60/p. 45
1867
Gained territory Dallas gained from Perry.
from Perry
18 February 1867 · Ala. Acts 1866, reg. sess., no. 509/p. 567
1868
Gained territory Dallas gained small area from Perry.
from Perry
28 December 1868 · Ala. Acts 1868, reg. sess., no. 111/p. 448
1868
Lost territory Dallas lost to creation of Baker (now Chilton). The small area gained by Dallas from Perry two days earlier became a Dallas exclave.
to Baker to Chiltonto Perry
30 December 1868 · Ala. Acts 1868, reg. sess., no. 142, sec. 1/p. 488
1869
Gained territory Dallas gained from Baker (now Chilton).
from Bakerfrom Chilton
15 December 1869 · Ala. Acts 1869, reg. sess., no. 11/p. 18
1875
Lost territory Dallas lost to Chilton.
to Chilton
13 February 1875 · Ala. Acts 1874, reg. sess., no. 73/p. 180
1889
Lost territory Dallas lost exclave of December 1868 to Perry.
to Perry
28 February 1889 · Ala. Acts 1888, bien. sess., no. 590/p. 1053

Land and parcels

What the maps cover in Dallas

Who publishes each layer, how good it is, and when we last checked.

Parcels Good enough

Lot lines and tax-map numbers for 32,144 parcels from Dallas County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026
Address points Missing

No public address points layer found for Dallas County yet.
Buildings Reference

Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026

Official: from the office that keeps the record
Good enough: a reliable statewide or national copy
Fallback: a guide only; check the official record
Missing: nothing public found yet

People and land

Dallas by the Census

Population

38,462 2020 Census count

Housing units

18,880 2020 Census count

Land area

979 square miles

Water area

15 square miles

People per sq mi

39 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Dallas County's official site

We have found the county's site but not its offices yet; start there.

County government

County government
The official website of Dallas County.
dallascounty-al.org

See your own lot on these maps

Open Dallas County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

Open the free map no sign-in Pro early access

Questions

Common questions about Dallas County

When was Dallas County founded?: Dallas County was founded in 1818, formed from Monroe County and Montgomery County, and named after Alexander J. Dallas.
What is the county seat of Dallas County?: The county seat of Dallas County is Selma.
Is there an online parcel map for Dallas County?: Yes. Dallas County publishes a parcel map of 32,144 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Dallas County's boundary or name changed?: Dallas County was created in 1818 from Monroe County and Montgomery County. Since then the Atlas of Historical County Boundaries records 13 later changes, chiefly involving Perry County, Chilton County and Baker County.
Is my lot in a flood zone?: We do not have flood maps for Dallas County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby