Keystone is a community in Hillsborough County, Florida, home to about 25,858 people across 35 square miles. Its ZIP code is 33556, and parts of 33558 and 33626 are in Keystone too.
Homes sold for a median of $266 per square foot in the three months ending August 2026, a seller’s market.
Mostly Keystone; also Odessa and Citrus Park
Mostly Cheval; part is in Keystone
Mostly Westchase; part is in Keystone
Each card is that ZIP code’s whole market, including any part outside Keystone. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Keystone’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Tampa International Airport (TPA)12 miles away |
|---|---|
| Nearest city of 250,000+ | Tampa, FL14 miles away |
| Nearest city of 1 million+ | Houston, TX782 miles away |
Straight-line distances from the center of Keystone; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Keystone had 25,211 residents in the 2020 census, up 72% since 2000.
It’s the 170th largest of 954 towns in Florida by population.
Hillsborough County grew from 36,013 residents in 1900 to 1,459,762 in 2020.
Hillsborough County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 91°F in summer, and winter lows average 51°F. About 54.4 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Tarpon Spgs Sewage Plt, FL weather station (10 miles away).
697,689 jobs at 42,977 businesses in Hillsborough County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
148 doctors and other health care providers list an office in Keystone.
Nearest hospitals
Providers with an office here
| Primary care doctors | 15 |
|---|---|
| Specialist doctors | 19 |
| Dentists | 14 |
| Nurse practitioners and physician assistants | 42 |
| Mental health providers | 26 |
| Physical and occupational therapists | 26 |
| Optometrists | 3 |
| Chiropractors | 3 |
| Pharmacies | 7 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (12 nearby)
Grocery stores (3 nearby)
Pharmacies
Libraries (1 nearby)
Museums
Theaters and performance venues (1 nearby)
Counts are within about 4 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Hillsborough, Pasco. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Hammond Elementary SchoolOdessa | Pre-K–5 | 690 | Public | 1.8 mi |
| Starkey Ranch K-8Odessa | Pre-K–8 | 1,927 | Public | 4.7 mi |
| Walker Middle Magnet SchoolOdessa | 6–8 | 1,039 | Public | 1.8 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Christian Crossings AcademyOdessa | K–12 | 132 | Christian (no specific denomination) | 4.3 mi |
| Odessa Christian SchoolOdessa | K–12 | 59 | Christian (no specific denomination) | 2.0 mi |
| Reconnections Education CenterOdessa | K–10 | 23 | Nonsectarian | 3.6 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Westchase, Cheval, Northdale, Odessa, Citrus Park, Land O' Lakes and Lutz.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.