33603 ZIP Code, Tampa, FL
33603 is a ZIP code in Tampa, Florida in Hillsborough County. It covers 4.1 square miles of land. The closest ZIP codes are 33604, 33602 and 33606. 19,869 people live here in 8,721 households. At about 4,809 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (58% own). Median household income is $74,081, close to the Florida median of $74,568.
Quick facts
- Mailing city: Tampa, FL
- County: Hillsborough County
- Land area: 4.1 sq mi
- Population: 19,869
- Median household income: $74,081
- Carrier routes: 16 (8,129 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 19,869 |
| Households | 8,721 |
| Median household income | $74,081 |
| Income per person | $51,739 |
| Median age | 38.9 |
| Homeowners | 58.3% |
| Median home value | $391,000 |
| Median rent | $1,518 |
| Bachelor's degree or higher | 41.2% |
| Average commute (minutes) | 22.3 |
| Households with kids under 18 | 23.9% |
| Moved in the past year | 15.4% |
| Below the poverty line | 13.8% |
| Broadband internet | 94.5% |
| Speak a non-English language at home | 25.3% |
Household income
| % of households | Value |
|---|---|
| <$10K | 6.3% |
| $10–15K | 2.8% |
| $15–25K | 7.1% |
| $25–35K | 4.2% |
| $35–50K | 17.2% |
| $50–75K | 13.1% |
| $75–100K | 11.4% |
| $100–150K | 15.1% |
| $150–200K | 8.6% |
| $200K+ | 14.1% |
Age
| % of all residents | Value |
|---|---|
| <10 | 7.2% |
| 10–19 | 10.0% |
| 20–24 | 5.1% |
| 25–34 | 19.9% |
| 35–44 | 18.0% |
| 45–54 | 13.6% |
| 55–64 | 13.6% |
| 65–74 | 7.1% |
| 75+ | 5.5% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 38.6% |
| Owned outright | 14.8% |
| Rented | 37.7% |
| Vacant | 8.9% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 70.9% |
| Townhome | 1.3% |
| 2–4 units | 8.5% |
| 5–19 units | 7.7% |
| 20+ units | 10.2% |
| Mobile / other | 1.4% |
Businesses in 33603
636 business establishments with 5,368 employees (ZIP Codes Business Patterns 2023).
- Health Care and Social Assistance: 97
- Professional, Scientific, and Technical Services: 92
- Retail Trade: 83
- Construction: 74
- Real Estate and Rental and Leasing: 57
- Other Services (except Public Administration): 56
- Accommodation and Food Services: 42
- Administrative and Support and Waste Management and Remediation Services: 36
EDDM carrier routes
33603 has 16 USPS carrier routes with 8,129 residential and 630 business mailboxes. Open the EDDM route map.
Carrier routes in 33603
33603 has 16 USPS carrier routes (16 city (C)) with 8,129 residential and 630 business mailboxes. Routes range from 328 homes (C009) to 789 homes (C029); the median route has 527 homes. The Census counted 8,721 households in 33603 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 7 |
| 500–749 | 8 |
| 750–999 | 1 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 33603 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C035 — USPS business mailboxes 105, 361 homes
- Route C031 — USPS business mailboxes 86, 563 homes
- Route C007 — USPS business mailboxes 75, 546 homes
- Route C038 — USPS business mailboxes 53, 367 homes
- Route C040 — USPS business mailboxes 49, 549 homes
Select these 5 routes on the route map
Every carrier route in 33603
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 526 | 39 | $64,513 | — | — | — |
| C004 | City | 545 | 43 | $76,438 | — | — | — |
| C005 | City | 378 | 19 | $76,438 | — | — | — |
| C007 | City | 546 | 75 | $48,081 | — | — | — |
| C009 | City | 328 | 46 | $48,081 | — | — | — |
| C015 | City | 492 | 13 | $63,033 | — | — | — |
| C023 | City | 637 | 32 | $76,438 | — | — | — |
| C024 | City | 570 | 11 | $82,033 | — | — | — |
| C025 | City | 469 | 0 | $60,959 | — | — | — |
| C029 | City | 789 | 7 | $39,785 | — | — | — |
| C030 | City | 528 | 20 | $127,826 | — | — | — |
| C031 | City | 563 | 86 | $58,669 | — | — | — |
| C033 | City | 481 | 32 | $82,033 | — | — | — |
| C035 | City | 361 | 105 | $39,785 | — | — | — |
| C038 | City | 367 | 53 | $64,513 | — | — | — |
| C040 | City | 549 | 49 | $76,438 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 33603 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
- 33604 — Tampa city, FL (2.2 mi)
- 33602 — Tampa city, FL (2.3 mi)
- 33606 — Tampa city, FL (2.9 mi)
- 33614 — Egypt Lake-Leto CDP, FL (2.9 mi)
- 33605 — Tampa city, FL (3.2 mi)
- 33607 — Tampa city, FL (3.6 mi)
- 33609 — Tampa city, FL (4.3 mi)
- 33612 — Tampa city, FL (4.6 mi)
Areas that include 33603
- Tampa, FL ZIP codes — 27 ZIP codes
- Hillsborough County ZIP codes — 56 ZIP codes
- Florida ZIP code data
Mail every home in 33603
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.
Tampa EDDM mailing
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 33603, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 33603 in?
- 33603 is a Tampa, FL mailing address. By land area, 100% lies inside Tampa.
- What county is 33603 in?
- 33603 is in Hillsborough County.
- What is the population of 33603?
- About 19,869 people (±1,393), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 19,070.
- What is the median household income in 33603?
- $74,081 (±$8,319), 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 33603?
- 16 USPS carrier routes with 8,129 residential and 630 business mailboxes (8,757 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 33603?
- The closest, measured center to center: 33604 (2.2 mi, Tampa), 33602 (2.3 mi, Tampa), 33606 (2.9 mi, Tampa), 33614 (2.9 mi, Egypt Lake-Leto), 33605 (3.2 mi, Tampa) and 33607 (3.6 mi, Tampa).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.