County outline
Where Martinsville city is located
Area breakdown
Land accounts for 99.5% of Martinsville city’s measured area and water for 0.5%. Its combined area converts to 28.5 square kilometers or approximately 7,045 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 10.956 | 28.376 | 7,011.8 |
| Water | 0.052 | 0.135 | 33.3 |
| Total | 11.008 | 28.511 | 7,045.1 |
How Martinsville city compares
By original Census land area, Martinsville city ranks #115 of 133 in Virginia and #3203 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.035 times the Virginia county-equivalent median of 310 square miles. It accounts for 0% of the combined county land area in the state.
See the complete Virginia ranking · What counts as a county equivalent?
Population and density of Martinsville city
The Census Bureau estimates that 13,849 people lived in Martinsville city on July 1, 2025. That ranks #2,242 of 3,222 county equivalents nationally and #103 of 133 in Virginia. Since the April 1, 2020 estimates base of 13,482, the population has grown by 367 (+2.7%), compared with +2.9% for Virginia as a whole.
With 11 square miles of land, that is 1,264 people per square mile (488 per km²), placing Martinsville city #140 nationally for density and #32 in Virginia. The median county equivalent has 47 people per square mile; the Virginia median is 109. Put another way, there are about 0.506 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 13,478 | 13,536 | 13,658 | 13,726 | 13,789 | 13,849 |
| Change | — | +58 | +122 | +68 | +63 | +60 |
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 Martinsville city
Every resident of Martinsville city lives within Martinsville city. The city and the county equivalent cover the same territory, 11 square miles of land in the 2026 place Gazetteer, so there are no separate towns or unincorporated areas to list.
Metropolitan area
Martinsville city is a central county of the Martinsville, VA Micropolitan Statistical Area. Its 2 county equivalents have 63,091 residents on 393.3 square miles of land; Martinsville city accounts for 2.8% of the land and 22% of the residents. By combined land it ranks #495 of 542 micropolitan areas, and #150 by population.
| County equivalent | Population 2025 | Land mi² |
|---|---|---|
| Henry County | 49,242 | 382.4 |
| Martinsville city | 13,849 | 11 |
ZIP codes
1 ZIP Code Tabulation Area has land in Martinsville city; 0 of them have most of their land inside the county, and the others mainly cover neighboring areas.
24112
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 Martinsville city
Martinsville city shares a land border with 1 county equivalent. Henry County has 34.9 times its land area.
| Bordering county equivalent | Land mi² | Size vs. Martinsville city | Compare |
|---|---|---|---|
| Henry County | 382.4 | 34.9× larger | Compare |
How big is Martinsville city compared with U.S. states?
Martinsville city has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 94 times as much. Virginia’s county land could hold about 3,604 areas the size of Martinsville city.
Another way to picture it: the same land area would fill a square about 3.31 miles (5.3 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 Martinsville city?
Martinsville city has more land than 19 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 Martinsville city at #3,203 nationally by total area, the same position as its land rank. Changing the area definition does not change its position in this release.
Its water share is 0.5%, compared with a national county-equivalent median of 1.2% — 0.7 percentage points lower. 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 Martinsville city in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #3202 | Hormigueros Municipio, Puerto Rico | 11.3 | Compare |
| #3203 | Martinsville city, Virginia | 11 | This county |
| #3204 | Fredericksburg city, Virginia | 10.5 | 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 36.683527, -79.863647. 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: 28,374,651 m²; AWATER: 135,578 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 Martinsville city?
Martinsville city, Virginia has 11 square miles (28.4 km²) of land and 0.052 square miles of water, for a total area of 11 square miles. It ranks #3203 of 3,222 U.S. county equivalents by land area.
Is Martinsville city the largest county in Virginia?
No. Martinsville city ranks #115 of 133 in Virginia by land area. The largest is Pittsylvania County, with 969 square miles of land.
What counties border Martinsville city?
Martinsville city shares a land border with Henry County.
What is the population of Martinsville city?
The Census Bureau estimates Martinsville city had 13,849 residents on July 1, 2025, ranking #2,242 of 3,222 county equivalents. That is 1,264 people per square mile of land.
Is Martinsville city part of a metropolitan area?
Yes. It is a central county of the Martinsville, VA Micropolitan Statistical Area, which has 2 county equivalents and 63,091 residents.
How many ZIP codes are in Martinsville city?
1 ZIP Code Tabulation Area has land in Martinsville city, and 0 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Martinsville city compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 94.4 times as much land.
How many acres of land are in Martinsville city?
The land measurement converts to approximately 7,012 acres. Including water, total area is approximately 7,045 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.