keyword

is it illegal to marry your sibling

Monthly search volume and cost-per-click data for "is it illegal to marry your sibling" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=is+it+illegal+to+marry+your+sibling&country=us" +--------------+------------------+ | volume | 390 | | cpc | $0 | | 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
what states can you marry your sibling	210	$0	9/20
is it legal to marry your sibling	170	$0	10/20
where is it legal to marry your sibling	170	$0	10/20
is it legal to marry your brother	170	$0	8/20
what states can you marry your sister	110	$0	8/20
is it illegal to marry your sister	90	$0	9/20
why is it illegal to marry your sibling	50	$0	12/20
can you legally marry your sibling	50	$0	11/20
is marrying your sibling legal	50	$0	11/20
is sibling marriage legal	30	$0	9/20

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=is+it+illegal+to+marry+your+sibling&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