Oklahoma's jobless rate fell one-tenth of a percentage point to 4.9 percent in April, officials said Friday.
The national unemployment rate also fell one-tenth of a point to 7.5 percent, the Oklahoma Employment Security Commission said.
Solid hiring helped lower unemployment rates in 40 U.S. states last month, the most since November. The declines show the job market is improving throughout most of the country.
The Labor Department said Friday that unemployment rates increased in only three states: Louisiana, Tennessee and North Dakota. Rates were unchanged in seven states.
California, New York and South Carolina all reported the largest unemployment rate declines in April. Each state's rate fell by 0.4 percentage points.
The report said 30 states added jobs in April, while 18 reported fewer jobs.
Nationwide, employers added 165,000 jobs in April and the unemployment rate fell to a four-year low of 7.5 percent.
The economy has added an average of 208,000 jobs a month since November. That marks an increase from only 138,000 jobs a month being added in the previous six months.
In Oklahoma, seasonally adjusted employment rose slightly, while the number of unemployed Oklahomans fell by more than 2,000 during the month.
The state's professional and business services sector showed the strongest job growth in April, adding 1,300 jobs.
Over the past year, the state's labor force has grown by 16,740, while the local economy has created 18,800 jobs and the number of unemployed Oklahomans has declined by 2,050, the commission reported.
Unemployment is declining in many states because the housing industry is creating jobs again. Rates have also declined because many of the unemployed have stopped looking for work. The government counts people as unemployed only if they are actively seeking jobs.
Texas has created 41,500 construction jobs in the past year. That has helped the state be the nation's leader in job growth over the past year. The state added 33,100 jobs last month and 326,100 jobs over the past 12 months.
Texas' unemployment rate stayed at 6.4 percent in April compared with March, but has fallen from 7 percent a year ago.
By The Numbers