seodata.dev

keyword

zip code plus 4

Monthly search volume and cost-per-click data for "zip code plus 4" in US.

$ curl "https://app.seodata.dev/v1/search-volume?q=zip-code-plus-4&country=us" +--------------+------------------+ | volume | 6,600 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-03-31 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
zip code plus 4 lookup 14,800 $0 20/20
9 digit zip code 6,600 $0 20/20
9-digit zip code 6,600 $0 20/20
plus 4 zip code 6,600 $0 20/20
zip code 9 digit 6,600 $0 20/20
full zip code 9 digit 5,400 $1.57 20/20
zip code 9 digits 5,400 $1.57 20/20
united states postal service zip code plus 4 4,400 $0.44 20/20
full zip code 3,600 $6.81 20/20
full zip codes 3,600 $11.49 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://app.seodata.dev/v1/search-volume?q=zip-code-plus-4&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