33576 ZIP Code, San Antonio, FL

33576 is a ZIP code in San Antonio, Florida in Pasco County. It covers 21 square miles of land. The closest ZIP codes are 33545, 33574 and 33544. 6,273 people live here in 2,911 households. With about 303 people per square mile it is lightly settled, and most homes are owner-occupied (96%). Median household income is $76,388, close to the Florida median of $74,568; the median age is 61.8, older than most ZIP codes.

Quick facts

Key figures

MeasureValue
Residents6,273
Households2,911
Median household income$76,388
Income per person$61,659
Median age61.8
Homeowners95.5%
Median home value$376,400
Median rent$998
Bachelor's degree or higher36.0%
Average commute (minutes)28.1
Households with kids under 1811.2%
Moved in the past year14.1%
Below the poverty line7.8%
Broadband internet91.3%
Speak a non-English language at home7.0%

Household income

% of householdsValue
<$10K8.5%
$10–15K1.1%
$15–25K4.3%
$25–35K6.0%
$35–50K10.6%
$50–75K17.6%
$75–100K18.1%
$100–150K12.3%
$150–200K7.0%
$200K+14.4%

Age

% of all residentsValue
<105.4%
10–197.0%
20–245.0%
25–344.4%
35–445.1%
45–5410.1%
55–6421.2%
65–7420.5%
75+21.3%

Tenure

% of housing unitsValue
Owned, with mortgage40.2%
Owned outright46.8%
Rented4.1%
Vacant8.9%

Type of building

% of housing unitsValue
Detached house79.6%
Townhome14.1%
2–4 units0.6%
5–19 units2.6%
20+ units0.0%
Mobile / other3.1%

Businesses in 33576

126 business establishments with 1,789 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

33576 has 6 USPS carrier routes with 6,403 residential and 110 business mailboxes. Open the EDDM route map.

Carrier routes in 33576

33576 has 6 USPS carrier routes (6 rural (R)) with 6,403 residential and 110 business mailboxes. Routes range from 622 homes (R001) to 1,607 homes (R005); the median route has 990 homes. The Census counted 2,911 households in 33576 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4990
500–7492
750–9991
1,000–1,4992
1,500+1

Best routes in 33576 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

  1. Route R002 — USPS business mailboxes 60, 885 homes
  2. Route R004 — USPS business mailboxes 25, 1,473 homes
  3. Route R001 — USPS business mailboxes 22, 622 homes
  4. Route R006 — USPS business mailboxes 2, 721 homes
  5. Route R003 — USPS business mailboxes 1, 1,095 homes

Select these 5 routes on the route map

Every carrier route in 33576

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
R001Rural62222$113,270———
R002Rural88560$59,514———
R003Rural1,0951$86,955———
R004Rural1,47325$84,924———
R005Rural1,6070$84,924———
R006Rural7212$84,924———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 33576 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

Areas that include 33576

Where it ranks

Mail every home in 33576

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 33576, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 33576 in?
33576 is a San Antonio, FL mailing address. By land area, 8% lies inside Pasadena Hills, 6% lies inside San Antonio and 4% lies inside St. Leo; the rest is outside any Census-defined city or community.
What county is 33576 in?
33576 is in Pasco County.
What is the population of 33576?
About 6,273 people (±644), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 4,879.
What is the median household income in 33576?
$76,388 (±$11,684), compared with $74,568 for Florida as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 33576?
6 USPS carrier routes with 6,403 residential and 110 business mailboxes (6,515 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 33576?
The closest, measured center to center: 33545 (2.5 mi, Pasadena Hills), 33574 (3.7 mi, St. Leo), 33544 (5.6 mi, Wesley Chapel), 33543 (6.8 mi, Wesley Chapel), 33541 (6.9 mi, Pasadena Hills) and 33525 (7.6 mi, Pasadena Hills).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.