Cover Page	6 Months Ended
	Jun. 30, 2025
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2025
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q2
Document Quarterly Report	true
Document Transition Report	false
Entity Registrant Name	ZETA GLOBAL HOLDINGS CORP.
Entity Central Index Key	0001851003
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Trading Symbol	ZETA
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Interactive Data Current	Yes
Title of 12(b) Security	Class A Common Stock
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	001-40464
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	80-0814458
Entity Address, Address Line One	3 Park Ave, 33rd Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10016
City Area Code	212
Local Phone Number	967-5055