According to the United States Census Bureau, the city has a total area of 6.3 square miles (16.4 km²), of which, 6.3 square miles (16.4 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.32%) is water.
Brownfield lies in the center of Terry County, and the southern portion of the South Plains and Llano Estacado. The city itself rests on a thick layer of cliche bedrock, which creates a nearly flat horizon that stretches for miles. The only terrain variation lies at the south end of the city where the Lost Draw, a dried up river bed that hasn't seen water since the last Ice Age, carved a channel that runs across the entire county.
The most notable geographic feature of Brownfield remains its red dirt. The soil creates an almost irridescent red color during sunrise and sunset due to the high iron oxide content.
The most significant time of the year for weather events starts in March and runs through September when severe thunderstorms form on the Great Plains. Massive amounts of rain, winds, hail, and a few tornadoes are to be expected at this time of year. Late thunderstorms that produce hail are significantly harmful to the local economy as it destroys the local cotton crop.
A significant haze also develops over the city as the local cotton gins go to work stripping the cotton from the husk, seperating the seeds, and then compressing the cotton into 500lb bales. The haze is actually comprised of fine cotton dust, and sometimes small drifts develop in the street resembling snow mixed with red dirt.
Peanut growing has found a toehold on the economy as the over use of cotton has stripped the soil of most of its nutrients, and the emergence of Boll Weevils has started to make significant inroads into the cotton industry.
Oil production continues to form a small, but significant part of the Brownfield landscape. With the sale of Amoco to British Petroleum (BP) in the mid-1990's, thousands of jobs were lost to the local economy as BP saw no benefit to have such a small oil field staffed with engineers, when all work could easily be accomplished in the regional headquarters of Midland-Odessa, or Houston. The withdrawal of oil assets proved extremely detrimental to the town as housing prices remained stagnant, despite the national housing boom. A typical 3,000 sqft house costing $95,000 in 1991 still sold for $95,000 in 2008.
There were 3,176 households out of which 34.5% had children under the age of 18 living with them, 55.3% were married couples living together, 14.1% had a female householder with no husband present, and 26.4% were non-families. 24.1% of all households were made up of individuals and 14.3% had someone living alone who was 65 years of age or older. The average household size was 2.68 and the average family size was 3.19.
In the city the population was spread out with 27.2% under the age of 18, 9.8% from 18 to 24, 27.3% from 25 to 44, 20.0% from 45 to 64, and 15.8% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 109.5 males. For every 100 females age 18 and over, there were 111.6 males.
The median income for a household in the city was $26,504, and the median income for a family was $32,076. Males had a median income of $23,637 versus $19,628 for females. The per capita income for the city was $13,854. About 21.8% of families and 26.0% of the population were below the poverty line, including 38.7% of those under age 18 and 13.5% of those age 65 or over.
Despite these low academic levels, the sports program at the high school has been very successful. The football teams receive new uniforms every two to three years, and the basketball/volleyball teams receive new shoes every year (to enhance performance). Winning numerous games has propelled BHS to regional levels in the past years. The BHS Cubs are usually seen driving to and from sports events in the brightly colored red and white "Cub Busses", modified Greyhound busses purchased at great expense to the school system.