    <SEC-DOCUMENT>0001104659-24-034923-index.html : 20240315
    <SEC-HEADER>0001104659-24-034923.hdr.sgml : 20240315
    <ACCEPTANCE-DATETIME>20240315133935
    ACCESSION NUMBER:		0001104659-24-034923
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		24
    CONFORMED PERIOD OF REPORT:	20240425
    FILED AS OF DATE:		20240315
    DATE AS OF CHANGE:		20240315

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CITIZENS & NORTHERN CORP
    		CENTRAL INDEX KEY:			0000810958
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		ORGANIZATION NAME:           	02 Finance
    		IRS NUMBER:				232451943
    		STATE OF INCORPORATION:			PA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-16084
    		FILM NUMBER:		24753733

    	BUSINESS ADDRESS:
    		STREET 1:		90-92 MAIN ST
    		CITY:			WELLSBORO
    		STATE:			PA
    		ZIP:			16901
    		BUSINESS PHONE:		877-838-2517

    	MAIL ADDRESS:
    		STREET 1:		90-92 MAIN ST
    		CITY:			WELLSBORO
    		STATE:			PA
    		ZIP:			16901
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>tm242822d2_def14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: tm242822d2_def14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>2
    <FILENAME>cznc-20231231.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
    <TEXT>
    Document 2 - file: cznc-20231231.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>3
    <FILENAME>cznc-20231231_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE
    <TEXT>
    Document 3 - file: cznc-20231231_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>4
    <FILENAME>cznc-20231231_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
    <TEXT>
    Document 4 - file: cznc-20231231_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>5
    <FILENAME>cznc-20231231_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
    <TEXT>
    Document 5 - file: cznc-20231231_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>tm242822d1_def-14asp1img001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: tm242822d1_def-14asp1img001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>tm242822d1_def-14asp1img002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: tm242822d1_def-14asp1img002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>tm242822d1_def-14asp2img001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: tm242822d1_def-14asp2img001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>tm242822d1_def-14asp3img001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: tm242822d1_def-14asp3img001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>tm242822d1_def-14asp3img002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: tm242822d1_def-14asp3img002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>tm242822d1_def-14asp3img003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: tm242822d1_def-14asp3img003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>tm242822d1_def-14asp3img004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: tm242822d1_def-14asp3img004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>tm242822d1_def-14asp3img005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: tm242822d1_def-14asp3img005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>tm242822d1_def-14asp3img006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: tm242822d1_def-14asp3img006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>15
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 15 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>16
    <FILENAME>R2.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 16 - file: R2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>18
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 18 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>19
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 19 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>21
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 21 - file: FilingSummary.html

    Document 21 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>23
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 23 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>24
    <FILENAME>0001104659-24-034923-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 24 - file: 0001104659-24-034923-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>25
    <FILENAME>tm242822d2_def14a_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 25 - file: tm242822d2_def14a_htm.html

    Document 25 - RAW XML: tm242822d2_def14a_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>