Question: Coincidence of place names

I was recently looking at a county map of Florida and noticed several place names that are identical to place names in Washington State, where I live. Some of them are easily explainable (both states have a Franklin County, for example, which makes sense) but
other's aren't so. Pasco, Washington, for example, and Pasco County, Florida. Another is Columbia County, Florida, and the Columbia River (and corresponding Gorge) here in Eastern Washington. The common place names I've found between the two states are Columbia, Baker, Franklin, Washington, and Pasco. Now that I look at it, only three of the names really puzzle me, and those are Baker, Columbia, and Pasco. Is it just coincidence that Washington and Florida wound up with identically named places?