| Official Name: | Lamar, Mississippi |
| Pushpin Map: | Mississippi#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Mississippi |
| Subdivision Type2: | County |
| Subdivision Name2: | Benton |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.47 |
| Area Land Km2: | 1.47 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.57 |
| Area Land Sq Mi: | 0.57 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 39 |
| Population Density Km2: | 26.62 |
| Population Density Sq Mi: | 68.90 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 492 |
| Coordinates: | 34.9172°N -89.3178°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 38683 |
| Area Code: | 662 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 672275 |
Lamar is a census-designated place and unincorporated community in Benton County, Mississippi, United States. It is located along Mississippi Highway 7 in western Benton County. Lamar has a post office with the ZIP code 38642.[2] The nearly abandoned Mississippi Central Railroad runs through Lamar, and is only used rarely for freight trafficking.[3] Lamar shares its ZIP code with the nearby community of Slayden.
It was first named as a CDP in the 2020 Census which listed a population of 39.[4]
Lamar was named in honor of Lucius Quintus Cincinnatus Lamar, author of the Mississippi Ordinance of Secession, Confederate diplomat and U.S. senator.[5] Lamar was originally located in Marshall County, but after Benton County was created from Marshall County and Tippah County, the town was moved two miles east to be closer to the railroad. Lamar was formerly home to a school.[6] A post office first began operation under the name Lamar in 1837.[7]
| White alone (NH) | 35 | 89.74% | |
| Black or African American alone (NH) | 1 | 2.56% | |
| Native American or Alaska Native alone (NH) | 0 | 0.00% | |
| Asian alone (NH) | 0 | 0.00% | |
| Pacific Islander alone (NH) | 0 | 0.00% | |
| Some Other Race alone (NH) | 1 | 2.56% | |
| Mixed Race or Multi-Racial (NH) | 0 | 0.00% | |
| Hispanic or Latino (any race) | 2 | 5.13% | |
| Total | 39 | 100.00% |