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Florida County
Seminole County, Florida
Orlando's most affluent suburb and Central Florida's corporate corridor - from Lake Mary's corporate headquarters cluster (dozens of major companies including Mitsubishi Power, Deloitte, and the American Automobile Association) to Sanford's revitalized riverfront on Lake Monroe, Oviedo's master-planned communities with top-ranked schools, and a county that has consistently ranked among Florida's best places to live for its combination of economic opportunity, school quality, and community character.
Affiliate disclosure: This page contains affiliate links. We may earn a commission if you use them, at no extra cost to you. Our editorial recommendations are independent of these relationships.
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Office: Seminole County Emergency Management – (407) 665-0000 | seminolecountyfl.gov/emergency
Alert System: Seminole County Alert; Florida FDEM; CodeRED; NOAA Weather Radio
FEMA Region: Region 4
Notes: Central Florida Orlando metro county; Sanford is county seat; hurricane risk (Charley 2004; Irma 2017); flooding (Lake Monroe/St. Johns River; multiple lakes); severe thunderstorms; one of the smallest but most densely populated counties in Florida; highly urbanized; the Seminole County economy is tightly integrated with the Orlando metro
7-8. ROADS/BUILDING
Roads: I-4 (primary Orlando metro corridor); SR-417 (GreeneWay toll road); US-17-92 (primary north-south commercial corridor through Casselberry, Winter Springs, Longwood, Sanford); SR-434 (east-west); SR-436 (Semoran Boulevard); SunRail (multiple stations including Sanford); Orlando Sanford International Airport (SFB – Allegiant, other charter carriers; a significant budget travel airport)
Building: Extremely active; Lake Mary (technology corridor – one of Florida’s most significant technology employment centers; Siemens, JPMorgan, and hundreds of tech and financial firms have major operations; highly active commercial development); Sanford (historic downtown revitalization is excellent); Oviedo (one of Florida’s most desirable suburbs); Winter Springs; Casselberry; Longwood; Altamonte Springs
9-10. VETERANS/HEALTH
VA: Orlando VA at Lake Nona accessible; Sanford VA CBOC; large veteran community
Hospitals: AdventHealth Altamonte Springs; AdventHealth Oviedo; Central Florida Regional Hospital (Sanford – (407) 321-4500); excellent Orlando hospital system accessible
Libraries
LIBRARIES
System: Seminole County Public Library System – 7 branches; excellent; one of the finer suburban library systems in central Florida; the John F. Germany-inspired Casselberry branch; Lake Mary branch reflects the technology employment community
Parks & Recreation
PARKS & RECREATION
Key Assets: Lake Monroe (Sanford waterfront – Lake Monroe is the largest lake in the St. Johns River system at the point where the river broadens into a lake; the Sanford waterfront has been beautifully revitalized; dining, marina, Riverwalk; the SunRail station; historic Sanford’s brick streets); Seminole Wekiva Trail (excellent cycling and walking trail connecting the county’s communities); Wekiwa Springs State Park (Apopka – the finest spring park in the Orlando metro area; crystal-clear spring; canoeing the Wekiva River through subtropical forest; the spring’s 72°F water; manatees occasionally; excellent wildlife); Markham Woods Road (a Canopy Road-style tree tunnel through Seminole County; one of central Florida’s most beautiful drives); Historic Sanford (one of central Florida’s finest historic downtowns; the Sanford Museum; the Celery Avenue corridor; Sanford was a major celery-growing center in the early 20th century and was called the “Celery City”)
Notes: Seminole County’s Lake Mary technology corridor is one of the most significant technology employment centers in Florida; companies including Siemens, JPMorgan Chase, Electronic Arts, and hundreds of others have major Florida operations there; the area is consistently ranked as one of the finest tech employment corridors in the Southeast; Wekiwa Springs is the finest spring park in the Orlando metro area and one of central Florida’s most accessible and excellent natural experiences; Sanford’s downtown revival is one of the more successful historic downtown revitalization stories in central Florida
13-15. GIS/ANIMALS/ENVIRONMENT
Key Issues: Growth management in a nearly fully developed county; Wekiva River protection (the Wekiva River flows from Wekiwa Springs through Seminole County to the St. Johns River; it is one of the most studied and protected river systems in central Florida; the Wekiva Basin gopher tortoises and Florida scrub jays require active management; the Wekiva Parkway (SR-429) was designed with wildlife underpasses to maintain habitat connectivity; the Wekiva Study Area coordinates regional land use planning to protect the basin); St. Johns River water quality through Lake Monroe; rapid urbanization environmental impacts
About Seminole County
Seminole County is Orlando’s most consistently affluent and highly educated suburban county – a community that has attracted corporate headquarters, professional families, and high-performing schools while maintaining a distinct identity from Orange County.
Lake Mary (population ~15,000) has emerged as one of Central Florida’s premier corporate addresses – the I-4 and Lake Mary Boulevard corridor hosts dozens of major regional and national corporate headquarters, making it one of Florida’s most significant suburban business districts outside Miami and Tampa.
Sanford (the county seat, population ~60,000) on Lake Monroe has completed a remarkable downtown revival – the historic commercial district, SunRail commuter rail access, and waterfront character have attracted restaurants, breweries, and antique dealers to a city that was economically moribund a decade ago.
Oviedo and Winter Springs consistently rank among Florida’s most desirable communities for families – highly rated Seminole County Public Schools, master-planned neighborhoods, and proximity to UCF and the Research Park tech corridor drive sustained demand.
All Services
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The Seminole County Property Appraiser at 1101 E. 1st Street, Sanford, FL 32771, phone 407-665-7506, assesses at just value. No FL estate or inheritance tax.
Courts & Legal
Seminole County Clerk of Court at 301 N. Park Avenue, Sanford, FL 32771, phone 407-665-4330, handles probate.
Marriage & Vital Records
Marriage licenses, divorce records, and birth & death certificates are handled by the following office(s):
CLERK OF COURTS (Records, Marriage Licenses)
301 N. Park Ave., Sanford, FL 32771
(407) 665-4330
Genealogy
County-level record sources
Seminole County Clerk of the Circuit Court (probate/estate case files – see Probate section above).
Local societies
No dedicated Seminole County genealogical society was confirmed in available directories; the Central Florida Genealogical Society (headquartered in neighboring Orange County) is a useful regional resource.
Probate & Estate
Losing someone and having to deal with courts and paperwork at the same time is hard. This section won’t make that easier, but it should tell you what to expect, what it costs, and where to go – so at least you’re not walking in blind.
Where to go
Seminole County Clerk of the Circuit Court, Probate Division 301 N. Park Avenue, Sanford, FL 32771 Seminole County sits in Florida’s 18th Judicial Circuit.
IMPORTANT – a major statewide law change just took effect: Florida’s summary administration threshold DOUBLED from $75,000 to $150,000 effective July 1, 2026, under CS/HB 1337 (Chapter 2026-57, Laws of Florida). Confirm which threshold applies based on date of death when helping someone (see
Probate filings, estate administration, and guardianship matters are handled by the following office(s):
Public Safety & Arrests
Arrest records, inmate search, and law enforcement services are handled by the following office(s):
SHERIFF
100 Eslinger Way, Sanford, FL 32773
(407) 665-6650
Elections & Voting
Voter registration, polling locations, and elections information are handled by the following office(s):
SUPERVISOR OF ELECTIONS
1500 E. Airport Blvd., Sanford, FL 32773
(407) 708-7500
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
FL Dept of Health — Seminole
400 W. Airport Blvd., Sanford, FL 32773
(407) 665-3000
FL DCF — Seminole
(407) 260-6600
FL Medicaid
(800) 299-4833
AdventHealth Altamonte
adventhealth.com/altamonte
Orlando Health South Seminole
orlandohealth.com/south-seminole
Central Florida Regional Hospital
centralfloridaregional.com
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Editorial Trust
5 official sources cited
Reviewed by CountyOffices Editorial Team
Last verified June 2026
County Facts
County Seat: Sanford
Population: 475,000
Area: 309 sq mi
Established: 1913
Tier: 1
Public Records
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