    <SEC-DOCUMENT>0001193125-24-104508-index.html : 20240422
    <SEC-HEADER>0001193125-24-104508.hdr.sgml : 20240422
    <ACCEPTANCE-DATETIME>20240422135659
    ACCESSION NUMBER:		0001193125-24-104508
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		6
    CONFORMED PERIOD OF REPORT:	20240530
    FILED AS OF DATE:		20240422
    DATE AS OF CHANGE:		20240422

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			First Seacoast Bancorp, Inc.
    		CENTRAL INDEX KEY:			0001943802
    		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
    		ORGANIZATION NAME:           	02 Finance
    		IRS NUMBER:				920334805
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-41597
    		FILM NUMBER:		24860735

    	BUSINESS ADDRESS:
    		STREET 1:		633 CENTRAL AVENUE
    		CITY:			DOVER
    		STATE:			NH
    		ZIP:			03820
    		BUSINESS PHONE:		603-742-4680

    	MAIL ADDRESS:
    		STREET 1:		633 CENTRAL AVENUE
    		CITY:			DOVER
    		STATE:			NH
    		ZIP:			03820
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>d702902ddef14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: d702902ddef14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>g702902g01a01.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: g702902g01a01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>g702902g01x01.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: g702902g01x01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>g702902g02a01.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: g702902g02a01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g702902g02b02.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g702902g02b02.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g702902g03c34.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g702902g03c34.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>