keyword

metro system washington dc

Monthly search volume and cost-per-click data for "metro system washington dc" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=metro+system+washington+dc&country=us" +--------------+------------------+ | volume | 6,600 | | cpc | $0.03 | | competition | 0.02 | | country | US | | updated | 2026-06-27 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
subway in dc	14,800	$0.11	20/20
subway in washington dc	14,800	$0.12	20/20
metro station washington dc	9,900	$0.02	20/20
metro subway washington dc	9,900	$0.25	20/20
washington dc subway system	9,900	$0.22	20/20
metrorail washington dc	9,900	$0.25	18/20
subway washington dc	8,100	$0.35	20/20
dc subway	8,100	$0.35	19/20
dc metro system	2,400	$0.13	20/20
metro system dc	2,400	$0.13	20/20

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://api.seodata.dev/v1/keyword?q=metro+system+washington+dc&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt