When was Orange County founded?

Orange County was founded in 1824, formed from St. Johns County, and named after orange.

What is the county seat of Orange County?

The county seat of Orange County is Orlando.

Is there an online parcel map for Orange County?

Yes. A public source publishes a parcel map of 498,092 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Orange County's boundary or name changed?

Orange County was created in 1824 from St. Johns County. Since then the Atlas of Historical County Boundaries records 17 later changes, chiefly involving Brevard County, St. Lucie County and Lake County. It was formerly called Mosquito.

Who issues building permits in Orange County?

The county's page on building permits: Exemptions from Permitting Requirements. Inside a city or town, ask that city first.

Who issues septic and well permits in Orange County?

The county's page on septic systems and wells: Contáctenos.

Is my lot in a flood zone?

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

County · code 12095

Orange CountyFlorida

Orange County is a county in Florida with its seat in Orlando. It was created on December 29, 1824, from St. Johns County.

Founded1824
County seatOrlando
Named fororange
Land area902 sq mi + 101 sq mi water
Population1,429,908 2020 Census
Parcels mapped498,092 checked 16 October 2026

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

Updated 19 October 2026

Census outline · seat marked

History

Formed in 1824 from St. Johns County

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

Originally named Mosquito County when created from St. Johns County in 1824, it was renamed Orange County in 1845. The county went through numerous boundary adjustments throughout the 19th century, gaining and losing land to neighboring counties including Brevard, Volusia, and Marion.

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

1824
Orange County created Mosquito (now Orange) created by Florida Territory from St. Johns.
from St. Johns
29 December 1824 · Fla. Terr. Acts 1824, 3d sess., sec. 10/p. 262
1828
Lost territory Mosquito (now Orange) lost to Indian lands (non-county area) when the treaty line was resurveyed. 19 January 1828 · Fla. Terr. Acts 1827, 6th sess., p. 171; Royce, 704-705, pl. 121
1844
Gained territory Mosquito (now Orange) apparently gained from Hillsborough, and lost to creation of Marion and St. Lucie (original, now Brevard).
from Hillsborough from Marion from St. Lucie from Brevard
14 March 1844 · Fla. Terr. Acts 1844, 22d sess., sec. 1/pp. 31, 43
1845
Renamed Mosquito renamed Orange.
formerly Mosquito
30 January 1845 · Fla. Terr. Acts 1845, 23d sess., no. 31/p. 56
1845
Gained territory Orange gained from St. Lucie (original, now Brevard).
from St. Lucie from Brevard
27 February 1845 · Fla. Terr. Acts 1845, 23d sess., no. 35/p. 58

Show all 20 changes (15 more)

1824
Orange County created Mosquito (now Orange) created by Florida Territory from St. Johns.
from St. Johns
29 December 1824 · Fla. Terr. Acts 1824, 3d sess., sec. 10/p. 262
1828
Lost territory Mosquito (now Orange) lost to Indian lands (non-county area) when the treaty line was resurveyed. 19 January 1828 · Fla. Terr. Acts 1827, 6th sess., p. 171; Royce, 704-705, pl. 121
1844
Gained territory Mosquito (now Orange) apparently gained from Hillsborough, and lost to creation of Marion and St. Lucie (original, now Brevard).
from Hillsborough from Marion from St. Lucie from Brevard
14 March 1844 · Fla. Terr. Acts 1844, 22d sess., sec. 1/pp. 31, 43
1845
Renamed Mosquito renamed Orange.
formerly Mosquito
30 January 1845 · Fla. Terr. Acts 1845, 23d sess., no. 31/p. 56
1845
Gained territory Orange gained from St. Lucie (original, now Brevard).
from St. Lucie from Brevard
27 February 1845 · Fla. Terr. Acts 1845, 23d sess., no. 35/p. 58
1846
Gained territory Orange gained small area from Marion along Lake George.
from Marion
25 December 1846 · Fla. Laws 1846, 2d sess., ch. 106/p. 63
1846
Lost territory Orange lost to St. Lucie (original, now Brevard).
to St. Lucie to Brevard
28 December 1846 · Fla. Laws 1846, 2d sess., ch. 105/p. 62
1849
Exchanged territory Orange exchanged with St. Lucie (original, now Brevard).
with St. Lucie with Brevard
10 January 1849 · Fla. Laws 1848, 4th sess., ch. 290/p. 97
1854
Lost territory Orange lost to creation of Volusia.
to Volusia
29 December 1854 · Fla. Laws 1854, 7th sess., ch. 624/p. 44
1866
Gained territory Orange gained from Brevard.
from Brevard
6 December 1866 · Fla. Laws 1866, 14th sess., ch. 1621/p. 82
1870
Boundary clarified Boundary between Orange and Volusia was clarified to run west of Huntoon's Island (no change).
with Volusiano change
14 February 1870 · Fla. Laws 1870, 3d sess., ch. 1764/p. 45
1872
Gained territory Orange gained from Sumter.
from Sumter
14 February 1872 · Fla. Laws 1872, 5th sess., ch. 1895/p. 52
1873
Lost territory Orange lost to Brevard.
to Brevard
18 February 1873 · Fla. Laws 1873, 6th sess., ch. 1964/p. 36
1874
Gained territory Orange gained from Brevard.
from Brevard
19 February 1874 · Fla. Laws 1874, 7th sess., ch. 1998/p. 63
1879
Gained territory Orange gained from Polk.
from Polk
5 March 1879 · Fla. Laws 1879, 10th sess., ch. 3177/p. 141
1887
Lost territory Orange lost to creation of Osceola and lost small area to Brevard.
to Osceola to Brevard
11 July 1887 · Fla. Laws 1887, 1st sess., ch. 3768/p. 148
1887
Lost territory Orange lost to creation of Lake.
to Lake
26 July 1887 · Fla. Laws 1887, 1st sess., ch. 3771, secs. 1-2/pp. 154-155
1889
Lost territory Orange lost small area to Lake.
to Lake
31 May 1889 · Fla. Laws 1889, ext. sess., ch. 3944/p. 176
1913
Lost territory Orange lost to creation of Seminole.
to Seminole
25 April 1913 · Fla. Laws 1913, 14th sess., gen., ch. 6511, sec. 1/p. 365
1961
Boundary clarified Orange boundaries were redefined, correcting mistake of 25 April 1913 (no change).
no change
22 June 1961 · Fla. Laws 1961, 38th sess., gen., ch. 61-483/p. 1075

Land and parcels

What the maps cover in Orange

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

Parcels Good enough

Lot lines and tax-map numbers for 498,092 parcels. 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 Orange 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

Orange by the Census

Population

1,429,908 2020 Census count

Housing units

561,851 2020 Census count

Land area

902 square miles

Water area

101 square miles

People per sq mi

1,585 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.

Permits

Health department: septic and wellfrom espanol.orangecountyfl.net · checked 13 October 2026
Exemptions from Permitting Requirementsfrom flrules.org
Permit Writer’s Toolsfrom dep.state.fl.us

Zoning and code

Planning and zoningfrom espanol.orangecountyfl.net · checked 13 October 2026
www.municode.comfrom municode.com
Municode.com (Capítulo 38, Sección 1408)from library.municode.com
Zoning Division (División de Zonificación)from espanol.orangecountyfl.net
Zoning Reviewfrom fasttrack.ocfl.net

County government

County government
The official website of Orange County.
espanol.orangecountyfl.net

See your own lot on these maps

Open Orange 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 Orange County

When was Orange County founded?: Orange County was founded in 1824, formed from St. Johns County, and named after orange.
What is the county seat of Orange County?: The county seat of Orange County is Orlando.
Is there an online parcel map for Orange County?: Yes. A public source publishes a parcel map of 498,092 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Orange County's boundary or name changed?: Orange County was created in 1824 from St. Johns County. Since then the Atlas of Historical County Boundaries records 17 later changes, chiefly involving Brevard County, St. Lucie County and Lake County. It was formerly called Mosquito.
Who issues building permits in Orange County?: The county's page on building permits: Exemptions from Permitting Requirements. Inside a city or town, ask that city first.
Who issues septic and well permits in Orange County?: The county's page on septic systems and wells: Contáctenos.
Is my lot in a flood zone?: We do not have flood maps for Orange County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

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