Lacy, those sound more like horse flies. We've got those too, and they do bite. They come in all kinds of sizes too, from about a centimeter to about an inch. (That comparison of measurements will have someone scratching their heads). Their numbers are more limited though.
This is what our horse flies look like.
Funny thing is, this image is also called a horse fly.

This is what my dad told us was a deer fly up in Canada.
Looking at other flies and their bites while I was perusing "images" gave me the creeps so I'm done.
Just thinking about these flies has me scratching my head... no measurements needed.

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