Which US state has the second smallest population?
As of the latest United States Census Bureau population estimates (2019), the state with the second smallest population is Vermont, with a population of approximately 623,989.
Complete the following task based on the instruction and optional input provided.### Instruction:
Which US state has the second smallest population?

### Output:
As of the latest United States Census Bureau population estimates (2019), the state with the second smallest population is Vermont, with a population of approximately 623,989.