34145 ZIP Code, Marco Island, FL
34145 is a ZIP code in Marco Island, Florida in Collier County. It covers 16 square miles of land. The closest ZIP codes are 34140, 34114 and 34113. 16,205 people live here in 8,609 households. With about 996 people per square mile it is lightly settled, and most homes are owner-occupied (89%). Median household income is $101,523, above the Florida median of $74,568; the median age is 67.9, older than most ZIP codes.
Quick facts
- Mailing city: Marco Island, FL
- County: Collier County
- Land area: 16 sq mi
- Population: 16,205
- Median household income: $101,523
- Carrier routes: 15 (16,600 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 16,205 |
| Households | 8,609 |
| Median household income | $101,523 |
| Income per person | $95,595 |
| Median age | 67.9 |
| Homeowners | 89.4% |
| Median home value | $896,300 |
| Median rent | $1,990 |
| Bachelor's degree or higher | 48.4% |
| Average commute (minutes) | 22.5 |
| Households with kids under 18 | 6.4% |
| Moved in the past year | 11.5% |
| Below the poverty line | 7.3% |
| Broadband internet | 93.7% |
| Speak a non-English language at home | 9.3% |
Household income
| % of households | Value |
|---|---|
| <$10K | 5.4% |
| $10–15K | 2.5% |
| $15–25K | 3.3% |
| $25–35K | 3.6% |
| $35–50K | 11.1% |
| $50–75K | 11.6% |
| $75–100K | 11.5% |
| $100–150K | 18.7% |
| $150–200K | 8.2% |
| $200K+ | 24.1% |
Age
| % of all residents | Value |
|---|---|
| <10 | 3.2% |
| 10–19 | 3.0% |
| 20–24 | 1.5% |
| 25–34 | 3.4% |
| 35–44 | 4.0% |
| 45–54 | 7.1% |
| 55–64 | 18.5% |
| 65–74 | 23.9% |
| 75+ | 35.4% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 13.3% |
| Owned outright | 28.6% |
| Rented | 4.9% |
| Vacant | 53.3% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 39.4% |
| Townhome | 0.9% |
| 2–4 units | 2.9% |
| 5–19 units | 12.1% |
| 20+ units | 44.2% |
| Mobile / other | 0.5% |
Businesses in 34145
804 business establishments with 8,310 employees (ZIP Codes Business Patterns 2023).
- Real Estate and Rental and Leasing: 131
- Professional, Scientific, and Technical Services: 99
- Retail Trade: 94
- Construction: 90
- Accommodation and Food Services: 86
- Other Services (except Public Administration): 82
- Administrative and Support and Waste Management and Remediation Services: 56
- Finance and Insurance: 46
EDDM carrier routes
34145 has 15 USPS carrier routes with 16,600 residential and 635 business mailboxes. Open the EDDM route map.
Carrier routes in 34145
34145 has 15 USPS carrier routes (15 city (C)) with 16,600 residential and 635 business mailboxes. Routes range from 567 homes (C009) to 2,924 homes (C003); the median route has 823 homes. The Census counted 8,609 households in 34145 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 0 |
| 500–749 | 5 |
| 750–999 | 4 |
| 1,000–1,499 | 3 |
| 1,500+ | 3 |
Best routes in 34145 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C002 — USPS business mailboxes 170, 658 homes
- Route C010 — USPS business mailboxes 121, 633 homes
- Route C018 — USPS business mailboxes 113, 1,269 homes
- Route C011 — USPS business mailboxes 87, 1,921 homes
- Route C015 — USPS business mailboxes 59, 567 homes
Select these 5 routes on the route map
Every carrier route in 34145
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 799 | 18 | $200,001+ | — | — | — |
| C002 | City | 658 | 170 | $92,726 | — | — | — |
| C003 | City | 2,924 | 17 | $107,728 | — | — | — |
| C004 | City | 823 | 4 | $163,631 | — | — | — |
| C005 | City | 1,063 | 7 | $108,661 | — | — | — |
| C006 | City | 1,866 | 18 | $137,903 | — | — | — |
| C008 | City | 1,072 | 9 | $79,670 | — | — | — |
| C009 | City | 567 | 2 | $108,661 | — | — | — |
| C010 | City | 633 | 121 | $85,284 | — | — | — |
| C011 | City | 1,921 | 87 | $137,903 | — | — | — |
| C012 | City | 902 | 6 | $137,903 | — | — | — |
| C013 | City | 745 | 3 | $79,670 | — | — | — |
| C015 | City | 567 | 59 | $163,631 | — | — | — |
| C016 | City | 791 | 1 | $67,806 | — | — | — |
| C018 | City | 1,269 | 113 | $85,284 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 34145 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
- 34140 — Marco Island city, FL (2.3 mi)
- 34114 — Winding Cypress CDP, FL (8.2 mi)
- 34113 — Lely Resort CDP, FL (9.5 mi)
- 34101 — Naples city, FL (11.1 mi)
- 34112 — Naples city, FL (14.9 mi)
- 34104 — Naples city, FL (16.9 mi)
- 34102 — Naples city, FL (17 mi)
- 34117 (17 mi)
Areas that include 34145
- Marco Island, FL ZIP codes — 2 ZIP codes
- Collier County ZIP codes — 22 ZIP codes
- Florida ZIP code data
Where it ranks
- No. 4 of 16: highest median home value in Collier County
- No. 3 of 16: highest share of owner-occupied homes in Collier County
- No. 1 of 16: highest median age in Collier County
Mail every home in 34145
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) 34145, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 34145 in?
- 34145 is a Marco Island, FL mailing address. By land area, 68% lies inside Marco Island; the rest is outside any Census-defined city or community.
- What county is 34145 in?
- 34145 is in Collier County.
- What is the population of 34145?
- About 16,205 people (±20), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 15,717.
- What is the median household income in 34145?
- $101,523 (±$10,735), 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 34145?
- 15 USPS carrier routes with 16,600 residential and 635 business mailboxes (17,234 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 34145?
- The closest, measured center to center: 34140 (2.3 mi, Marco Island), 34114 (8.2 mi, Winding Cypress), 34113 (9.5 mi, Lely Resort), 34101 (11.1 mi, Naples), 34112 (14.9 mi, Naples) and 34104 (16.9 mi, Naples).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.