Pine Bluff, with a population of over 55,000, is the seat of Jefferson County, and the sixth most populous city in Arkansas. With over 84,000 people in the county, population density at the 2000 census was 95.2 residents per square mile, and over 70 percent living in urbanized areas.
POPULATION: The data below are from the U.S. Bureau of Census.
| Year | City | Jefferson County |
| 1970 | 57,389 | 85,329 |
| 1980 | 56,576 | 90,718 |
| 1990 | 57,140 | 85,487 |
| 2000 | 55,085 | 84,278 |
The 2000 population for Jefferson County and its incorporated areas:
| Jefferson County | 84,278 |
| Pine Bluff | 55,085 |
| White Hall | 4,732 |
| Redfield | 1,157 |
| Altheimer | 1,192 |
| Humphrey | 806 |
| Sherrill | 126 |
| Wabbaseka | 323 |
RACIAL COMPOSITION - JEFFERSON COUNTY (based on 2000 census):
| Black | 49.6% |
| White | 48.5% |
| Other | 1.9% |
AGE DISTRIBUTION - JEFFERSON COUNTY (based on 2000 census):
| Under 5 | 5,801 | 6.9% |
| 5-9 | 6,045 | 7.2% |
| 10-14 | 6,346 | 7.5% |
| 15-19 | 6,988 | 8.3% |
| 20-24 | 6,119 | 7.3% |
| 25-34 | 10,774 | 12.8% |
| 35-44 | 12,687 | 15.1% |
| 45-54 | 11,262 | 13.4% |
| 55-59 | 4,046 | 4.8% |
| 60-64 | 3,322 | 3.9% |
| 65-74 | 5,565 | 6.6% |
| 75-84 | 3,858 | 4.6% |
| 85 and over | 1,465 | 1.7% |
| Median Age: 35.1 years | ||
POPULATION BY SEX - JEFFERSON COUNTY (based on 2000 census):
| Male | 41,249 | (or 48.9%) |
| Female | 43,029 | (or 51.1%) |
EDUCATIONAL ATTAINMENT (2006 American Community Survey):
| Percentage of High School Graduates (25 years and over): |
| Jefferson County | 79.8% |
| State of Arkansas | 80.5% |
| United States | 84.1% |
| Percentage of College (4-Year) Graduates: |
| Jefferson County | 17.8% |
| State of Arkansas | 18.2% |
| United States | 27.0% |
| Percentage of High School Graduates Attending Institutions of Higher Education (Fall, 2004): |
| Jefferson County | 80.5% |
| State of Arkansas | 61.0% |
