seodata.dev

keyword

illinois state income tax

Monthly search volume and cost-per-click data for "illinois state income tax" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=illinois+state+income+tax&country=us" +--------------+------------------+ | volume | 14,800 | | cpc | $19.73 | | competition | 0 | | country | US | | updated | 2026-06-21 | +--------------+------------------+
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
illinois state tax 14,800 $19.73 20/20
illinois tax 12,100 $11.25 19/20
illinois taxes 12,100 $7.59 18/20
taxes illinois 12,100 $11.25 18/20
illinois income tax 6,600 $8.07 20/20
income tax illinois 6,600 $8.07 20/20
illinois income tax rate 5,400 $0 20/20
illinois state income tax rate 4,400 $7.47 20/20
does illinois have state income tax 1,600 $0 20/20
illinois sit tax 30 $0 17/20

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=illinois+state+income+tax&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