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keyword

letter of birmingham jail

Monthly search volume and cost-per-click data for "letter of birmingham jail" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=letter+of+birmingham+jail&country=us" +--------------+------------------+ | volume | 33,100 | | cpc | $3.64 | | competition | 0.04 | | country | US | | updated | 2026-05-21 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
letter from birmingham jail 33,100 $3.54 20/20
letter from birmingham 33,100 $3.64 14/20
letter to birmingham jail 33,100 $3.54 14/20
city of birmingham jail 2,900 $0 16/20
letter from birmingham jail summary 2,900 $0.91 15/20
martin luther king letter from birmingham jail 1,900 $2.24 20/20
birmingham jail 1,300 $0 18/20
the letter of birmingham jail 720 $4.27 12/20
the letter from birmingham jail 590 $2.25 19/20
letter from birmingham jail by martin luther king jr 390 $3.09 12/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=letter+of+birmingham+jail&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt