35. Pennsylvania
> Index score: 1.27
> Libraries and book mobiles: 5.2 per 100,000 (19th fewest)
> Visits: 3.2 per person (16th lowest)
> Total books and documents: 23,930,321, or 1.9 per person (18th fewest)
> Population in the Pennsylvania service area: 12,446,590

Source: raksyBH / iStock Editorial via Getty Images
34. South Dakota
> Index score: 1.31
> Libraries and book mobiles: 11.4 per 100,000 (11th most)
> Visits: 2.9 per person (9th lowest)
> Total books and documents: 2,767,347, or 2.2 per person (23rd fewest)
> Population in the South Dakota service area: 1,270,281

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33. Arkansas
> Index score: 1.34
> Libraries and book mobiles: 8.0 per 100,000 (16th most)
> Visits: 3.2 per person (15th lowest)
> Total books and documents: 5,897,291, or 2.0 per person (20th fewest)
> Population in the Arkansas service area: 2,891,314
32. Washington
> Index score: 1.34
> Libraries and book mobiles: 5.1 per 100,000 (17th fewest)
> Visits: 4.8 per person (15th highest)
> Total books and documents: 11,857,230, or 1.6 per person (9th fewest)
> Population in the Washington service area: 7,436,699
31. Virginia
> Index score: 1.35
> Libraries and book mobiles: 4.6 per 100,000 (13th fewest)
> Visits: 4.0 per person (22nd lowest)
> Total books and documents: 15,399,727, or 1.8 per person (16th fewest)
> Population in the Virginia service area: 8,403,629
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