Kerr County was hit the hardest, with at least 106 deaths.
Over 130 people are dead from the devastating flooding in the Texas Hill Country.
Kerr County was hit the hardest, with at least 106 deaths, including 36 children. President Donald Trump signed a disaster declaration for the county and the Federal Emergency Management Agency is on the ground there.
Search and rescue operations are ongoing.
The death toll from devastating floods in central Texas has risen to 24, Kerr County Sheriff Larry L. Leitha told reporters during a news conference Friday evening.
The sheriff did not provide an update on the number of people unaccounted for. Earlier, state officials said about 23 campers with a girls' summer camp remained unaccounted for.
Texas Gov. Greg Abbott said the state remains in a search and rescue posture hours after devastating flooding tore through central Texas.
He said two state search and rescue teams, the Texas National Guard and a host of other agencies are continuing to conduct rescues Friday night.
"They will continue in the darkness of night … They will be nonstop, seeking to find everybody who is unaccounted for," Abbott said during a news conference Friday night.
The governor signed a disaster declaration for the affected counties.
State officials said during a news conference earlier Friday that 20 campers from Camp Mystic -- out of 750 total campers -- were unaccounted for after catastrophic flooding in central Texas on Friday.
Camp Mystic is a private Christian summer camp for girls, according to the organization's website. Established in 1926, it sits along the banks of the Guadalupe River, which has seen devastating floods amid the heavy rain.
In a brief note to families earlier Friday, the camp said: "We have sustained catastrophic level floods. We have no power, water, or wifi."
The camp's office said campers on Senior Hill and Cypress Lake have been accounted for.
"If your daughter is not accounted for you have been notified. If you have not been personally contacted then your daughter is accounted for."
Photos from the scene of devastating flooding in central Texas show the debris-strewn banks of the Guadalupe River -- as well as emotional scenes of families being reunited.
Local officials have confirmed at least 13 deaths so far.
The area hard-hit by the flooding is home to several major camps. At one of them -- Camp Mystic, a girl's summer camp -- there are 23 campers unaccounted for, Lt. Gov. Dan Patrick said.
Photos also showed families lining up at a reunification center.
