React setState not updating state

setState() is usually asynchronous, which means that at the time you console.log the state, it's not updated yet. Try putting the log in the callback of the setState() method. It is executed after the state change is complete:

this.setState({ dealersOverallTotal: total }, () => {
  console.log(this.state.dealersOverallTotal, 'dealersOverallTotal1');
}); 

In case of hooks, you should use useEffect hook.

const [fruit, setFruit] = useState('');

setFruit('Apple');

useEffect(() => {
  console.log('Fruit', fruit);
}, [fruit])