A state senate district is an area defined by a state in which voters elect representatives to a state legislature's upper chamber. The size of state senate districts varies widely from state to state. In California, state senators represent about 1 million people on average. In North Dakota and Wyoming, state senators represent about 20,000 people on average.
This table includes records for each of the ~2,000 state senate districts in the US, with year-specific entries representing what a given district looked like at a specific point in time.
The year a given district was put into effect.
is latest version
A boolean indicating whether a record represents the latest available version of a given district.
A unique 5-character code, maintained by the US Census, assigned to each district in a state legislature's upper chamber.
The district's name, according to the US Census. ("SLDU" is an acronym for "state legislative district upper," which is how the Census refers to these districts.)
A unique 2-digit code, maintained by the US Census, for the state this district sits within.
The two-letter abbreviation for the state this district sits within.
The name of the state this district sits within.
"sldu_name": "State Senate District 20",
"shape": "POLYGON((-112.016347 33.370803, -112.016591 33.370742, ...))"