When was Duval County founded?

Duval County was founded in 1822, formed from St. Johns County, and named after William Pope Duval.

Is there an online parcel map for Duval County?

Yes. Duval County publishes a parcel map of 408,916 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Duval County's boundary or name changed?

Duval County was created in 1822 from St. Johns County. Since then the Atlas of Historical County Boundaries records 12 later changes, chiefly involving Clay County, Nassau County and St. Johns County.

Is my lot in a flood zone?

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

County · code 12031

Duval CountyFlorida

Duval County is a county in Florida, founded in 1822.

Founded1822
Named forWilliam Pope Duval
Land area763 sq mi + 156 sq mi water
Population995,567 2020 Census
Parcels mapped408,916 checked 14 October 2026

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

Updated 19 October 2026

Census outline

History

Formed in 1822 from St. Johns County

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

Duval County was created on August 12, 1822, from St. Johns County by the Florida Territory. The county gained and lost territory over its first decades through boundary adjustments and the creation of neighboring counties including Alachua, Leon, Nassau, and Clay.

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

1822
Duval County created Duval created by Florida Territory from St. Johns.
from St. Johns
12 August 1822 · Fla. Terr. Acts 1822, 1st sess., sec. 1/p. 3
1823
Gained territory Duval gained from Jackson, exchanged with St. Johns.
from Jackson from St. Johns
24 June 1823 · Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 8
1824
Gained territory Duval gained from St. Johns, lost to creation of Alachua, Leon, and Nassau.
from St. Johns from Alachua from Leon from Nassau
29 December 1824 · Fla. Terr. Acts 1824, 3d sess., sec. 8/p. 262
1826
Lost territory Duval lost to Nassau.
to Nassau
30 December 1826 · Fla. Terr. Acts 1826, 5th sess., p. 158
1844
Gained territory Duval gained from Columbia; boundary with Alachua adjusted.
from Columbia from Alachua
15 March 1844 · Fla. Terr. Acts 1844, 22d sess., p. 55

Show all 14 changes (9 more, mostly small adjustments)

1822
Duval County created Duval created by Florida Territory from St. Johns.
from St. Johns
12 August 1822 · Fla. Terr. Acts 1822, 1st sess., sec. 1/p. 3
1823
Gained territory Duval gained from Jackson, exchanged with St. Johns.
from Jackson from St. Johns
24 June 1823 · Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 8
1824
Gained territory Duval gained from St. Johns, lost to creation of Alachua, Leon, and Nassau.
from St. Johns from Alachua from Leon from Nassau
29 December 1824 · Fla. Terr. Acts 1824, 3d sess., sec. 8/p. 262
1826
Lost territory Duval lost to Nassau.
to Nassau
30 December 1826 · Fla. Terr. Acts 1826, 5th sess., p. 158
1828
Boundary clarified When all county boundaries in Florida Territory were redefined, Duval gained an area that was also assigned to Nassau; an overlap resulted.
with Nassauno change
23 November 1828 · Fla. Terr. Acts 1828, 7th sess., secs. 5-6/pp. 220-221
1844
Gained territory Duval gained from Columbia; boundary with Alachua adjusted.
from Columbia from Alachua
15 March 1844 · Fla. Terr. Acts 1844, 22d sess., p. 55
1857
Changed 1828 overlap between Duval and Nassau ended; based upon their most recently defined configurations, Duval appeared to lose to Nassau, while Nassau appeared to exchange with Duval.
Nassau
2 January 1857 · Fla. Laws 1856, 8th sess., ch. 811/p. 55
1858
Lost territory Duval lost to creation of Clay.
to Clay
31 December 1858 · Fla. Laws 1858, 9th sess., ch. 866, secs. 1-2/p. 19
1859
Gained territory Duval gained from Nassau.
from Nassau
15 January 1859 · Fla. Laws 1858, 9th sess., ch. 920/p. 55
1859
Lost territory Duval lost small area in the St. Johns River to Clay when the boundary shifted from the west bank to the west margin of the channel.
to Clay
22 December 1859 · Fla. Laws 1859, adj. sess., ch. 1039/p. 63
1875
Exchanged territory Duval exchanged with St. Johns.
with St. Johns
15 February 1875 · Fla. Laws 1875, 8th sess., ch. 2068/p. 70
1911
Lost territory Duval lost to Baker.
to Baker
19 May 1911 · Fla. Laws 1911, 13th sess., ch. 6244/p. 216
1976
Lost territory Duval lost small area to Clay along Interstate Highway 295.
to Clay
1 July 1976 · Fla. Laws 1976, reg. sess., gen., ch. 76-17/p. 25
1980
Lost territory Duval lost small area to Clay along Interstate Highway 295.
to Clay
31 December 1980 · Fla. Laws 1980, reg. sess., gen., ch. 80-9, secs. 1-3/pp. 64-66

Land and parcels

What the maps cover in Duval

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

Parcels Good enough

Lot lines and tax-map numbers for 408,916 parcels from Duval County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 14 October 2026
Address points Missing

No public address points layer found for Duval 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

Duval by the Census

Population

995,567 2020 Census count

Housing units

435,033 2020 Census count

Land area

763 square miles

Water area

156 square miles

People per sq mi

1,305 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

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Zoning and code

Ordinance Codefrom library.municode.com

County government

County government
The official website of Duval County.
coj.net

See your own lot on these maps

Open Duval 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 Duval County

When was Duval County founded?: Duval County was founded in 1822, formed from St. Johns County, and named after William Pope Duval.
Is there an online parcel map for Duval County?: Yes. Duval County publishes a parcel map of 408,916 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Duval County's boundary or name changed?: Duval County was created in 1822 from St. Johns County. Since then the Atlas of Historical County Boundaries records 12 later changes, chiefly involving Clay County, Nassau County and St. Johns County.
Is my lot in a flood zone?: We do not have flood maps for Duval County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby