Buffalo, SC · standard
ZIP Code 29321
Union County, South Carolina - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 2,596
- 26/sq mi Moderate-density area
- $34,464
- Median income Below-median income area
- $60,000
- Median home value Below-median home value
- 17.2%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Buffalo pairs one of the lowest household incomes in the country with among the most affordable home values nationally, in a rural, homeowner-dominated area.
- 3rd pct
- household income, US ZIPs
- 2nd pct
- home value, US ZIPs
- 26
- people per sq mi
- 86%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 29321 against every reporting US ZIP.
ZIP code 29321 covers 101.4 square miles in Buffalo, Union County, South Carolina (a standard USPS delivery area), with a modest 2,596 residents on file, a density of 26 people per square mile, in the New York time zone.
ZIP 29321 sits on the lower end of the income spectrum: median household income is $34,464 (46% below the average South Carolina ZIP), while per-capita income is $27,016. The poverty rate is 33.5%, so the area-level income figures should not be treated as typical household experience. Home values sit below the statewide ZIP benchmark: the median is $60,000 (73% below the average South Carolina ZIP), and median rent is $904; owner occupancy is 86.4%.
Educational attainment sits below the national norm: 17.2% of adults hold a bachelor's degree or higher, the median age is 41.7, and the average commute is -. The page also surfaces 4 ZIP codes within roughly 10 miles and 4 more in Union County, so 29321 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Top industries in ZIP 29321
Top 5 sectors by establishment count in Buffalo, SC
Which industries have the most business establishments in ZIP 29321.
- Retail trade
Retail trade
6 establishments
- Other services (except public administration)
Other services (except public administration)
6 establishments
- Accommodation and food services
Accommodation and food services
4 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 29321, Buffalo, SC · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
2,596
Population
101.4
Area (sq mi)
26
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 29321?
41.7
Median Age
50.6%
Male
49.4%
Female
0.2%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$34,464
Median Household Income
-46% vs state ZIP avg
$27,016
Per Capita Income
33.5%
Poverty Rate
8.1%
Unemployment Rate
How ZIP 29321 ranks among South Carolina ZIPs
Buffalo, SC household income vs. every South Carolina ZIP code
Median household income among 384 reporting South Carolina ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$34,464 5th percentile higher than 5% of 384 South Carolina ZIPs
Each bar is a $20K-wide band; taller bars hold more South Carolina ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
1,570housing units
1,570
Total Housing Units
1,299
Occupied Units
271
Vacant Units
2.49
Avg Household Size
Occupancy Type
$60,000
Median Home Value
-73% vs state ZIP avg
$904
Median Rent
1978
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 22 business establishments in ZIP 29321, employing approximately 143 people with a combined annual payroll of $3,486,000.
22
Businesses
143
Employees
$3.5M
Annual Payroll
3
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Retail trade | 6 | 27.3% |
| Other services (except public administration) | 6 | 27.3% |
| Accommodation and food services | 4 | 18.2% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 29321 vs 29379 →
ZIP 29321 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 29379
Union (29379)
19,186 residents
- 29353 4,174
Jonesville (29353)
4,174 residents
- 29374 3,534
Pauline (29374)
3,534 residents
- 29321 2,596
Buffalo (29321)
2,596 residents
- 29331 142
Cross Anchor (29331)
142 residents
What this shows Among its immediate neighbors, ZIP 29321 ranks #4 by population - useful context the national average alone can't give.
ZIP 29321 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 29374
Pauline (29374)
$78,397 median income
- 29353
Jonesville (29353)
$64,494 median income
- 29379
Union (29379)
$40,879 median income
- 29321
Buffalo (29321)
$34,464 median income
What this shows By household income, ZIP 29321 ranks #4 of 4 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 29321, both outside SC so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (2,596 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Union County
Related Areas
Frequently Asked Questions
What county is ZIP code 29321 in?
ZIP code 29321 (Buffalo) is located in Union County, South Carolina. Union County contains multiple ZIP codes, see the full list at /counties/union-sc.
What is the population of ZIP code 29321?
ZIP code 29321 in Buffalo, SC has a population of 2,596 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 29321?
The median household income in ZIP 29321 is $34,464, which is 55% below the national average of $76,288.
What is the average home value in ZIP 29321?
The median home value in ZIP 29321 is $60,000, which is 78% below the national average of $278,155.
What is the demographic makeup of ZIP 29321?
The largest racial group in ZIP 29321 is White at 92.9%.
How many businesses are in ZIP code 29321?
ZIP code 29321 has 22 business establishments employing approximately 143 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 29321?
The top industries by establishment count in ZIP 29321 are: Retail trade (6), Other services (except public administration) (6), Accommodation and food services (4). There are 3 industry sectors represented in total.
What is the education level in ZIP code 29321?
In ZIP code 29321, 48.4% of residents aged 25+ have a high school diploma or higher, and 17.2% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 29321?
In ZIP code 29321, approximately 86.4% of occupied housing units are owner-occupied and 13.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 29321?
The poverty rate in ZIP code 29321 is 33.5% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 29321's numbers, next.
- See how ZIP 29321 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Buffalo, SC ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.