Warren County’s jobless rate rose seven-tenths of a percent in September along with similar upticks in the statewide rate, according to seasonally adjusted figures from the Mississippi Department of Employment Security.

Meanwhile, Louisiana’s unemployment rate came in at its lowest in nearly 18 months.

Local unemployment was 11.7 percent for the month, up from 11 percent in August. Warren County’s rate has been in double digits for a year. Mississippi’s rate was 10.6 percent, up five-tenths of a percent from August. Adjusted for seasonal factors in the workplace, the rate was 10.6 percent, two-tenths of a point higher for the month. The state figure for September 2010 was 10.1 percent. The nation’s seasonally adjusted rate for this September was 9.1 percent.

The county’s labor force swelled to 21,610, up from a revised 21,280 in August. The number of unemployed last month was also up, to 2,540 from a revised 2,360. Laclede Chain Manufacturing Company LLC, the newest industry at Ceres Research and Industrial Interplex, opened this month with about 40 clerical and technical employees.

The number of people listed as unemployed in Mississippi rose to 144,300 in September from 134,600 in August. The civilian labor force, which includes the employed and those actively seeking work, rose to 1.357 million from 1.338 million. The most growth for the month came in the government, educational and health services, and professional and business services sectors. The leisure and hospitality and construction sectors lost the most in September.

Rankin County registered the state’s lowest jobless rate at 6.9 percent followed by Madison County at 7.6 percent. The highest rates were 19 percent in Clay County and 18.1 percent in Holmes County. Claiborne and Sharkey counties recorded higher rates for the month, with Claiborne up a point to 17 percent and Sharkey half a point to 11.6 percent. Issaquena County came in two points lower for the month, to 11.9 percent.

Louisiana’s adjusted and unadjusted rates were 6.9 percent in September, lowest since April 2010, the state Workforce Commission reported Wednesday.

Non-farm jobs grew by 41,300 over this time last year, the commission said. Over the year, goods-producing industries gained 13,900 jobs, while the service sector added 27,400 jobs. Government employment dropped by 2,000 jobs last month compared to September 2010.

Madison parish’s rate dropped a point for the month, to 10 percent. Tensas and East Carroll recorded increases of about a point, at 12.7 percent and 14.5 percent.

New Orleans added 10,900 non-farm jobs over the year, all in the services sector. Baton Rouge lost 800 non-farm jobs in a year, but added 2,100 goods-producing jobs. Shreveport-Bossier City added 3,600 non-farm jobs over the past year, including 1,500 goods-producing jobs and 2,100 in the service-providing sector.