Allendale County GIS Maps
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Allendale County, South Carolina, has 8,039 residents and covers 408.1 square miles. The population declined 22.8% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Allendale County is 45005.
Allendale is the county's largest population center. Allendale County also includes 5 zip codes, 1 public school district and 12 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers and sample data. Paid packages add full layers, analytics and database files.
Allendale County Trends
- Population
- 8,039▾
- Median Home Value
- $61,600▾
- K-12 Enrollment
- 855▾
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Allendale County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Allendale County Population
Allendale County had 8,039 residents in 2020. That was 22.8% lower than in 2010. Allendale County had 3,172 fewer people in 2020 than it did in 2000, which points to a long-term population decline. The county is fairly spread out, with about 20 people per square mile. Some of the county's most populated postal areas include Allendale, Fairfax and Martin.
Population Trend in Allendale County SC
Allendale County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Allendale County Zip Codes
Allendale County has 5 zip codes. Some of the county's most populated zip codes include Allendale (29810), Fairfax (29827) and Martin (29836). Allendale is the largest zip by population, with about 3,896 residents or 48% of the county total. Together, the three largest zips account for about 98% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Allendale County SC
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 29810 | Allendale | 3,896 | ▾ -21.9% |
| 29827 | Fairfax | 3,547 | ▾ -23.3% |
| 29836 | Martin | 412 | ▾ -14.5% |
| 29849 | Ulmer | 279 | ▾ -5.1% |
| 29932 | Luray | 219 | ▾ -18.6% |
| Download all zip code data | |||
Allendale County Zip Code populations and trends per most recent census data.
Allendale County Demographics
Allendale County has a median age of 42.5, which makes the county a little older than South Carolina overall. About 18.7% of residents are under 18, while 21.7% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 31.6% of the population, which points to a solid working-age base. About 13.3% of adults have a bachelor's degree or higher, above the statewide figure of 31.5%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.
Key Demographics for Allendale County SC
Median Age
42.5
Under 18
18.7%
Age 65+
21.7%
Bachelor's+
13.3%
Allendale County School Districts
Allendale County is served by 1 public school district with 855 students enrolled in 2024. Several larger districts account for a substantial share of students across the county map area. Those three districts account for about 100% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Allendale County SC
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Allendale County School District | 855 | 100% | ▾ -7.9% |
| Download all school district data | |||
Allendale County school district enrollment and trends per most recent NCES reporting data.
Allendale County Housing & Real Estate
Allendale County has a median home value of $61,600 and a median gross rent of $691. About 65% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the South Carolina median, while rents come in below the state average. In March 2026, the median listing price was $177,250 and homes spent about 152 days on the market.
Allendale County Housing Mix
Allendale County housing mix: owner, renter and vacant units.
Allendale County Housing Trends
Allendale County median home value and rent trend (last 5 years).
Businesses in Allendale County, SC
Allendale County has 274 business listings across 136 categories. The largest categories in Allendale County business listings are Churches & Religious Organizations (27, 9.9%), Gas Stations (9, 3.3%), and Baptist Church (9, 3.3%). The full Allendale County business listings dataset includes names, categories, addresses and contact details where available. Allendale County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Allendale County, SC
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 27 | 9.9% |
| Gas Stations | 9 | 3.3% |
| Baptist Church | 9 | 3.3% |
| Religious Organization | 7 | 2.6% |
| Discount Store | 6 | 2.2% |
| Public And Government Association | 6 | 2.2% |
| Money Transfer Services | 6 | 2.2% |
| Landmark And Historical Building | 5 | 1.8% |
| Post Offices | 5 | 1.8% |
| Convenience Stores | 5 | 1.8% |
Allendale County Business Listings
| Business | Category | City |
|---|---|---|
| Gooding Advertising | Advertising Agency | Allendale |
| Birdsong Corporation | Agricultural Service | Fairfax |
| Fairfax Feed and Seed | Agriculture | Fairfax |
| Allendale County Airport | Airport | Fairfax |
| Allendale County Ems Station 2 | Ambulance And Ems Services | Fairfax |
| Nell's Diner | American Restaurants | Fairfax |
| National Guard | Armed Forces Branch | Allendale |
| LibertyX Bitcoin ATM | ATMs | Allendale |
| Oswald Field | Attractions And Activities | Allendale County |
| 4 Brothers Auto Spa | Auto Detailing | Allendale |
| Download Allendale County business listings | ||
Allendale County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Allendale County Basemaps
Allendale County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Allendale County Data Package
This page shows a preview of what's included in the Allendale County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Allendale County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.