seodata.dev

keyword

chicago train system

Monthly search volume and cost-per-click data for "chicago train system" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=chicago+train+system&country=us" +--------------+------------------+ | volume | 3,600 | | cpc | $0.15 | | competition | 0 | | country | US | | updated | 2026-06-24 | +--------------+------------------+
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
chicago trains 22,200 $0.25 20/20
transit chicago 22,200 $1.57 20/20
chicago train 22,200 $0.25 18/20
chicago subway 9,900 $0.52 20/20
chicago public transportation 5,400 $0.19 17/20
public transportation chicago 5,400 $0.39 17/20
cta trains 3,600 $0.11 20/20
train system chicago 3,600 $0.15 20/20
cta train 3,600 $0.11 19/20
chicago transportation 1,900 $3.66 19/20

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=chicago+train+system&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