Residential delivery area · Florida
ZIP Code 34145: Marco Island, FL
ZIP code 34145 is in Marco Island, Florida, entirely in Collier County (Census 2020 ZIP-county file). About 16,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $101,523 (Census Bureau, ACS 2020-2024). By Census place, 68% of its land lies in Marco Island; 32% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Marco Island · its only residential ZIP
- County
- Collier County
- Census places
- Marco Island
- Metro area
- Naples-Marco Island, FL
- House district
- FL-19 119th Congress
- State
- Florida
- Time zone
- Eastern
- Land area
- 16.3 sq mi · 996 people per sq mi
- PO Box ZIPs
- 34146 also use the name Marco Island
Where is ZIP code 34145?
34145 centers on 25.910°, -81.695° and covers 16.3 square miles of land plus 15.4 of water. It borders 3 ZIP codes: 34140, 34114, 34113.
The map draws ZIP code areas only. For the streets inside 34145, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 34145 compare with the rest of Collier County?
| Measure | 34145 | In Collier County | In FL |
|---|---|---|---|
| People (ACS 2020-2024) | 16,205 | 14th of 23 | 582nd of 1,013 |
| Median household income | $102k | 7th of 17 | 136th of 819 |
| Median home value | $896k | 4th of 17 | 22nd of 833 |
Its median household income is higher than in 82% of U.S. residential ZIP codes, and it is denser than 78% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 34145?
The 2020 Census counted 15,717 people in 34145; the ACS, which samples households over 2020-2024, estimates 16,205. Between the 2010 and 2020 censuses its population fell 4.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 16,205
- 2020 Census count
- 15,717−4.2% since 2010 (16,407)
- Households
- 8,609
- Median age
- 67.9
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 34145?
Of the 16,205 people the ACS estimates in 34145, 5.9% are under 18 and 59.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (90.0%).
- Under 185.9%
- 18 to 6434.8%
- 65 and older59.3%
- White, not Hispanic90.0%
- Hispanic or Latino7.3%
- Other or two or more2.1%
- Black, not Hispanic0.4%
- Asian, not Hispanic0.2%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 34145 earn?
Median household income is $101,523 (ACS 2020-2024), the 7th highest of the 17 ranked ZIP codes in Collier County. It is not measurably different from 2015-2019 ($105,785 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $101,523±$10,735
- Income per person
- $95,595
- Below the poverty line
- 7.3%
- Unemployed (of the labor force)
- 4.8%
- Adults 25+ with a bachelor's degree
- 48.4%
- Adjusted gross income per tax return, 2022
- $450,6618,670 returns; wages 22% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 34145?
FHFA's house price index for 34145, built from repeat sales and appraisals of the same homes, rose 89% from 2015 to 2025 and rose 59% from 2020 to 2025, and moved −10.6% in 2025.
- Median home value (owners' estimate)
- $896,300
- Median gross rent
- $1,990
- Homes owned by their occupants
- 89.4%
- Housing units
- 18,500
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 34145?
804 business establishments had a location in this ZIP code in 2023, 45 more than in 2018; the most are in real estate and rental and leasing (ZIP Code Business Patterns).
- Real estate and rental and leasing131
- Professional, scientific, and technical services99
- Retail trade94
- Construction90
- Accommodation and food services86
- Other services (except public administration)82
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 34145?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 34140 | Goodland | 104 | – | 2.3 mi |
| 34114 | Naples | 23,559 | $89k | 8.2 mi |
| 34113 | Naples | 26,056 | $82k | 9.5 mi |
| 34101 | Naples | 0 | – | 11.1 mi (near) |
| 34112 | Naples | 27,193 | $70k | 14.9 mi (near) |
| 34104 | Naples | 26,408 | $72k | 16.9 mi (near) |
| 34102 | Naples | 11,179 | $131k | 17.0 mi (near) |
| 34117 | Naples | 19,923 | $111k | 17.0 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.
Which other ZIP codes use the name Marco Island?
1 more ZIP code carries the postal name Marco Island, FL without a residential delivery area: PO boxes at the post office, or a single organization with its own ZIP code. The Census Bureau publishes no figures for it.
| ZIP | County |
|---|---|
| 34146 | Collier County |
Source: GeoNames postal codes (CC BY 4.0), downloaded 2026-10-09; a ZIP code with no Census ZCTA has no residential delivery area.