County outline
Where Giles County is located
Area breakdown
Land accounts for 98.8% of Giles County’s measured area and water for 1.2%. Its combined area converts to 936.4 square kilometers or approximately 231,400 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 357.225 | 925.209 | 228,624 |
| Water | 4.337 | 11.233 | 2,775.7 |
| Total | 361.562 | 936.441 | 231,399.7 |
How Giles County compares
By original Census land area, Giles County ranks #54 of 133 in Virginia and #2667 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.152 times the Virginia county-equivalent median of 310 square miles. It accounts for 0.9% of the combined county land area in the state.
See the complete Virginia ranking · What counts as a county equivalent?
Population and density of Giles County
The Census Bureau estimates that 16,564 people lived in Giles County on July 1, 2025. That ranks #2,065 of 3,222 county equivalents nationally and #90 of 133 in Virginia. Since the April 1, 2020 estimates base of 16,792, the population has declined by 228 (−1.4%), compared with +2.9% for Virginia as a whole.
With 357.2 square miles of land, that is 46 people per square mile (18 per km²), placing Giles County #1,627 nationally for density and #104 in Virginia. The median county equivalent has 47 people per square mile; the Virginia median is 109. Put another way, there are about 14 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 16,786 | 16,578 | 16,434 | 16,523 | 16,636 | 16,564 |
| Change | — | −208 | −144 | +89 | +113 | −72 |
U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.
Cities and towns in Giles County
5 incorporated places lie at least partly in Giles County. Together they are home to 6,878 people (41.5%); the other 9,686 (58.5%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Pearisburg town, with 2,873 residents in the county.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Pearisburg townCounty seat | 2,873 | −1.5% | 3.192 |
| Narrows town | 2,036 | −2.6% | 1.267 |
| Pembroke town | 1,139 | −1% | 1.086 |
| Rich Creek town | 738 | −1.3% | 0.819 |
| Glen Lyn town | 92 | −3.2% | 0.61 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Giles County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Giles County is an outlying county of the Blacksburg-Christiansburg-Radford, VA Metropolitan Statistical Area. Its 5 county equivalents have 181,616 residents on 1,454.5 square miles of land; Giles County accounts for 24.6% of the land and 9.1% of the residents. By combined land it ranks #226 of 393 metropolitan areas, and #254 by population.
| County equivalent | Population 2025 | Land mi² |
|---|---|---|
| Montgomery County | 98,434 | 386.8 |
| Pulaski County | 33,586 | 319.8 |
| Radford city | 17,243 | 9.7 |
| Giles County | 16,564 | 357.2 |
| Floyd County | 15,789 | 380.9 |
ZIP codes
10 ZIP Code Tabulation Areas have land in Giles County; 9 of them have most of their land inside the county, and the others mainly cover neighboring areas.
24086240932412424128241342413624147241502416724315
ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.
Counties bordering Giles County
Giles County shares a land border with 6 county equivalents, including 2 in West Virginia. It has more land than 2 of them. The largest neighbor is Monroe County (472.8 mi²) and the smallest is Pulaski County (319.8 mi²). Together with its neighbors, Giles County forms a block of 2,641.4 mi² of land, of which it holds 13.5%.
| Bordering county equivalent | Land mi² | Size vs. Giles | Compare |
|---|---|---|---|
| Monroe CountyWest Virginia | 472.8 | 1.3× larger | Compare |
| Mercer CountyWest Virginia | 419 | 1.2× larger | Compare |
| Montgomery County | 386.8 | 1.1× larger | Compare |
| Bland County | 357.6 | about the same | Compare |
| Craig County | 328.1 | 1.1× smaller | Compare |
| Pulaski County | 319.8 | 1.1× smaller | Compare |
How big is Giles County compared with U.S. states?
Giles County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.9 times as much. Virginia’s county land could hold about 111 areas the size of Giles County.
Another way to picture it: the same land area would fill a square about 18.9 miles (30.4 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.
State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.
What stands out about Giles County?
Giles County has more land than 555 of the other 3,221 county equivalents in the dataset.
A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.
Does including water change its rank?
Using land plus water places Giles County at #2,709 nationally by total area, 42 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.
Its water share is 1.2%, compared with a national county-equivalent median of 1.2%. The two percentages are within 0.1 percentage points of each other. This describes the statistical geography’s land/water mix, not flood exposure or developable land.
Closest positions in the national land ranking
These entries sit immediately beside Giles County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #2666 | Lawrence County, Pennsylvania | 357.4 | Compare |
| #2667 | Giles County, Virginia | 357.2 | This county |
| #2668 | Warren County, New Jersey | 356.5 | Compare |
Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.
Representative coordinates
The Census internal point is 37.314575, -80.707043. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 925,207,267 m²; AWATER: 11,232,367 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is Giles County?
Giles County, Virginia has 357.2 square miles (925.2 km²) of land and 4.337 square miles of water, for a total area of 361.6 square miles. It ranks #2667 of 3,222 U.S. county equivalents by land area.
Is Giles County the largest county in Virginia?
No. Giles County ranks #54 of 133 in Virginia by land area. The largest is Pittsylvania County, with 969 square miles of land.
What counties border Giles County?
Giles County shares a land border with Monroe County, West Virginia, Pulaski County, Mercer County, West Virginia, Bland County, Montgomery County, and Craig County.
What is the population of Giles County?
The Census Bureau estimates Giles County had 16,564 residents on July 1, 2025, ranking #2,065 of 3,222 county equivalents. That is 46 people per square mile of land.
What is the county seat of Giles County?
The county seat of Giles County is Pearisburg.
What cities and towns are in Giles County?
Giles County has 5 incorporated places. The most populous are Pearisburg town, Narrows town, Pembroke town, Rich Creek town, and Glen Lyn town; 9,686 residents live outside any incorporated place.
Is Giles County part of a metropolitan area?
Yes. It is an outlying county of the Blacksburg-Christiansburg-Radford, VA Metropolitan Statistical Area, which has 5 county equivalents and 181,616 residents.
How many ZIP codes are in Giles County?
10 ZIP Code Tabulation Areas have land in Giles County, and 9 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Giles County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 2.9 times as much land.
How many acres of land are in Giles County?
The land measurement converts to approximately 228,624 acres. Including water, total area is approximately 231,400 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.