Residential delivery area · South Carolina
ZIP Code 29920: Saint Helena Island, SC
ZIP code 29920 uses the postal name Saint Helena Island, South Carolina and lies entirely in Beaufort County (Census 2020 ZIP-county file). About 11,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $77,744 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Fripp Island (3%) and Harbor Island (1%); 96% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Saint Helena Island · its only residential ZIP
- County
- Beaufort County
- Census places
- Fripp Island (3%) census-designated place; Harbor Island (1%) census-designated place
- Metro area
- Hilton Head Island-Bluffton-Port Royal, SC
- House district
- SC-1 119th Congress
- State
- South Carolina
- Time zone
- Eastern
- Land area
- 97.6 sq mi · 109 people per sq mi
Where is ZIP code 29920?
29920 centers on 32.364°, -80.554° and covers 97.6 square miles of land plus 45.3 of water. It borders 3 ZIP codes: 29907, 29902, 29905.
The map draws ZIP code areas only. For the streets inside 29920, 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 29920 compare with the rest of Beaufort County?
| Measure | 29920 | In Beaufort County | In SC |
|---|---|---|---|
| People (ACS 2020-2024) | 10,606 | 8th of 15 | 162nd of 424 |
| Median household income | $78k | 6th of 8 | 63rd of 265 |
| Median home value | $289k | 7th of 8 | 64th of 260 |
Its median household income is higher than in 59% of U.S. residential ZIP codes, and it is denser than 55% 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 29920?
The 2020 Census counted 9,214 people in 29920; the ACS, which samples households over 2020-2024, estimates 10,606. Between the 2010 and 2020 censuses its population fell 2.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 10,606
- 2020 Census count
- 9,214−2.8% since 2010 (9,481)
- Households
- 4,486
- Median age
- 51.1
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 29920?
Of the 10,606 people the ACS estimates in 29920, 17.8% are under 18 and 29.1% are 65 or older. The largest group by race and Hispanic origin is Black (not Hispanic) (53.6%), then White (not Hispanic) (36.7%).
- Under 1817.8%
- 18 to 6453.1%
- 65 and older29.1%
- Black, not Hispanic53.6%
- White, not Hispanic36.7%
- Hispanic or Latino4.5%
- Other or two or more4.5%
- Asian, not Hispanic0.6%
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 29920 earn?
Median household income is $77,744 (ACS 2020-2024), the 6th highest of the 8 ranked ZIP codes in Beaufort County. It rose from $63,149 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $77,744±$9,871
- Income per person
- $43,913
- Below the poverty line
- 19.9%
- Unemployed (of the labor force)
- 2.2%
- Adults 25+ with a bachelor's degree
- 36.4%
- Adjusted gross income per tax return, 2022
- $90,2304,880 returns; wages 42% 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 29920?
FHFA's house price index for 29920, built from repeat sales and appraisals of the same homes, rose 98% from 2015 to 2025 and rose 65% from 2020 to 2025, and moved −12.2% in 2025.
- Median home value (owners' estimate)
- $288,700
- Median gross rent
- $1,053
- Homes owned by their occupants
- 90.3%
- Housing units
- 7,163
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 29920?
116 business establishments had a location in this ZIP code in 2023, 27 more than in 2018; the most are in real estate and rental and leasing (ZIP Code Business Patterns).
- Real estate and rental and leasing18
- Professional, scientific, and technical services14
- Construction13
- Accommodation and food services13
- Other services (except public administration)12
- Retail trade11
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 29920?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 29907 | Beaufort | 15,190 | $97k | 8.1 mi |
| 29902 | Beaufort | 17,650 | $70k | 8.2 mi |
| 29905 | Parris Island | 1,729 | – | 8.6 mi |
| 29935 | Port Royal | 3,513 | $77k | 8.4 mi (near) |
| 29904 | Beaufort | 1,600 | – | 12.6 mi (near) |
| 29906 | Beaufort | 25,342 | $68k | 12.9 mi (near) |
| 29926 | Hilton Head Island | 24,458 | $98k | 13.7 mi (near) |
| 29940 | Seabrook | 3,256 | $54k | 14.9 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.