List of members of the United States House of Representatives in the 38th Congress by seniority

This is a complete list of members of the United States House of Representatives during the 38th United States Congress listed by seniority.
As an historical article, the districts and party affiliations listed reflect those during the 38th Congress (March 4, 1863 – March 3, 1865). Current seats and party affiliations on the List of current members of the United States House of Representatives by seniority will be different for certain members.^[1]

Seniority depends on the date on which members were sworn into office. Since many members are sworn in on the same day, subsequent ranking is based on previous congressional service of the individual and then by alphabetical order by the last name of the congressman.

Committee chairmanship in the House is often associated with seniority. However, party leadership is typically not associated with seniority.

Note: The "*" indicates that the representative/delegate may have served one or more non-consecutive terms while in the House of Representatives of the United States Congress.

U.S. House seniority list

Rank	Representative	Party	District	Seniority date (Previous service, if any)	No.# of term(s)	Notes
1	Elihu B. Washburne	R	IL-03	March 4, 1853	6th term	Dean of the House
2	Schuyler Colfax	R	IN-09	March 4, 1855	5th term	Speaker of the House
3	Justin S. Morrill	R	VT-02	March 4, 1855	5th term
4	Samuel S. Cox	D	OH-07	March 4, 1857	4th term
5	Henry L. Dawes	R	MA-10	March 4, 1857	4th term
6	Reuben Fenton	R	NY-31	March 4, 1857 Previous service: 1853–1855	5th term*	Resigned on December 20, 1864.
7	Owen Lovejoy	R	IL-05	March 4, 1857	4th term	Died on March 25, 1864.
8	George H. Pendleton	D	OH-01	March 4, 1857	4th term
9	Daniel W. Gooch	R	MA-06	January 31, 1858	4th term
10	John B. Alley	R	MA-05	March 4, 1859	3rd term
11	James M. Ashley	R	OH-10	March 4, 1859	3rd term
12	Thomas D. Eliot	R	MA-01	March 4, 1859 Previous service: 1854–1855	4th term*
13	Augustus Frank	R	NY-29	March 4, 1859	3rd term
14	James T. Hale	R	PA-18	March 4, 1859	3rd term
15	William S. Holman	D	IN-04	March 4, 1859	3rd term
16	Francis William Kellogg	R	MI-04	March 4, 1859	3rd term
17	Robert Mallory	U	KY-05	March 4, 1859	3rd term
18	James K. Moorhead	R	PA-22	March 4, 1859	3rd term
19	John W. Noell	U	MO-03	March 4, 1859	3rd term	Died on March 14, 1863.
20	Alexander H. Rice	R	MA-03	March 4, 1859	3rd term
21	James C. Robinson	D	IL-11	March 4, 1859	3rd term
22	Thaddeus Stevens	R	PA-09	March 4, 1859 Previous service: 1849–1853	5th term*
23	Edwin H. Webster	UU	MD-02	March 4, 1859	3rd term
24	William Windom	R	MN-01	March 4, 1859	3rd term
25	Sydenham E. Ancona	D	PA-08	March 4, 1861	2nd term
26	Isaac N. Arnold	R	IL-01	March 4, 1861	2nd term
27	Joseph Bailey	D	PA-15	March 4, 1861	2nd term
28	Portus Baxter	R	VT-03	March 4, 1861	2nd term
29	Fernando C. Beaman	R	MI-01	March 4, 1861	2nd term
30	Francis Preston Blair Jr.	R	MO-01	March 4, 1861 Previous service: 1857–1859 and 1860	4th term**	Resigned on June 10, 1864.
31	Ambrose W. Clark	R	NY-20	March 4, 1861	2nd term
32	Erastus Corning	D	NY-14	March 4, 1861 Previous service: 1857–1859	3rd term*	Resigned on October 5, 1863.
33	James A. Cravens	D	IN-02	March 4, 1861	2nd term
34	James E. English	D	CT-02	March 4, 1861	2nd term
35	Henry Grider	U	KY-03	March 4, 1861 Previous service: 1843–1847	4th term*
36	Aaron Harding	U	KY-04	March 4, 1861	2nd term
37	Philip Johnson	D	PA-11	March 4, 1861	2nd term
38	George W. Julian	R	IN-05	March 4, 1861 Previous service: 1849–1851	3rd term*
39	William D. Kelley	R	PA-04	March 4, 1861	2nd term
40	John Law	D	IN-01	March 4, 1861	2nd term
41	Jesse Lazear	D	PA-24	March 4, 1861	2nd term
42	James R. Morris	D	OH-15	March 4, 1861	2nd term
43	Warren P. Noble	D	OH-09	March 4, 1861	2nd term
44	John B. Steele	D	NY-13	March 4, 1861	2nd term
45	Moses F. Odell	D	NY-03	March 4, 1861	2nd term
46	Nehemiah Perry	D	NJ-05	March 4, 1861	2nd term
47	Frederick A. Pike	R	ME-05	March 4, 1861	2nd term
48	Theodore M. Pomeroy	R	NY-24	March 4, 1861	2nd term
49	John H. Rice	R	ME-04	March 4, 1861	2nd term
50	Edward H. Rollins	R	NH-02	March 4, 1861	2nd term
51	James S. Rollins	U	MO-09	March 4, 1861	2nd term
52	William G. Steele	D	NJ-03	March 4, 1861	2nd term
53	Francis Thomas	UU	MD-04	March 4, 1861 Previous service: 1831–1841	7th term*
54	Robert B. Van Valkenburgh	R	NY-27	March 4, 1861	2nd term
55	Daniel W. Voorhees	D	IN-07	March 4, 1861	2nd term
56	William H. Wadsworth	U	KY-09	March 4, 1861	2nd term
57	Elijah Ward	D	NY-06	March 4, 1861 Previous service: 1857–1859	3rd term*
58	Chilton A. White	D	OH-06	March 4, 1861	2nd term
59	Benjamin Wood	D	NY-04	March 4, 1861	2nd term
60	James F. Wilson	R	IA-01	October 8, 1861	2nd term
61	Samuel Hooper	R	MA-04	December 2, 1861	2nd term
62	Anthony L. Knapp	D	IL-10	December 12, 1861	2nd term
63	William A. Hall	U	MO-08	January 20, 1862	2nd term
64	William J. Allen	D	IL-13	June 2, 1862	2nd term
65	John D. Stiles	D	PA-06	June 3, 1862	2nd term
66	George H. Yeaman	U	KY-02	December 1, 1862	2nd term
67	Walter D. McIndoe	R	WI-06	January 26, 1863	2nd term
68	James C. Allen	D	IL	March 4, 1863 Previous service: 1853–1856 and 1856-1857	4th term**
69	William B. Allison	R	IA-03	March 4, 1863	1st term
70	Oakes Ames	R	MA-02	March 4, 1863	1st term
71	Lucien Anderson	UU	KY-01	March 4, 1863	1st term
72	Augustus C. Baldwin	D	MI-05	March 4, 1863	1st term
73	John D. Baldwin	R	MA-08	March 4, 1863	1st term
74	James G. Blaine	R	ME-03	March 4, 1863	1st term
75	George Bliss	D	OH-14	March 4, 1863 Previous service: 1853–1855	2nd term*
76	Henry T. Blow	U	MO-02	March 4, 1863	1st term
77	George S. Boutwell	R	MA-07	March 4, 1863	1st term
78	Sempronius H. Boyd	U	MO-04	March 4, 1863	1st term
79	Augustus Brandegee	R	CT-03	March 4, 1863	1st term
80	James Brooks	D	NY-08	March 4, 1863 Previous service: 1849–1853	3rd term*
81	John Martin Broomall	R	PA-07	March 4, 1863	1st term
82	James S. Brown	D	WI-01	March 4, 1863	1st term
83	John W. Chanler	D	NY-07	March 4, 1863	1st term
84	Freeman Clarke	R	NY-28	March 4, 1863	1st term
85	Brutus J. Clay	U	KY-07	March 4, 1863	1st term
86	John Creswell	UU	MD-01	March 4, 1863	1st term
87	Amasa Cobb	R	WI-03	March 4, 1863	1st term
88	Alexander Hamilton Coffroth	D	PA-16	March 4, 1863	1st term
89	Cornelius Cole	R	CA	March 4, 1863	1st term
90	John L. Dawson	D	PA-21	March 4, 1863 Previous service: 1851–1855	3rd term*
91	Henry W. Davis	UU	MD-03	March 4, 1863 Previous service: 1855–1861	4th term*
92	Thomas T. Davis	R	NY-23	March 4, 1863	1st term
93	Henry C. Deming	R	CT-01	March 4, 1863	1st term
94	Charles Denison	D	PA-12	March 4, 1863	1st term
95	Nathan F. Dixon II	R	RI-02	March 4, 1863 Previous service: 1849–1851	2nd term*
96	Ignatius L. Donnelly	R	MN-02	March 4, 1863	1st term
97	John F. Driggs	R	MI-06	March 4, 1863	1st term
98	Ebenezer Dumont	R	IN-06	March 4, 1863	1st term
99	Josiah B. Grinnell	R	IA-04	March 4, 1863	1st term
100	John R. Eden	D	IL-07	March 4, 1863	1st term
101	Joseph K. Edgerton	D	IN-10	March 4, 1863	1st term
102	Charles A. Eldredge	D	WI-04	March 4, 1863	1st term
103	John F. Farnsworth	R	IL-02	March 4, 1863 Previous service: 1857–1861	3rd term*
104	William E. Finck	D	OH-12	March 4, 1863	1st term
105	John Ganson	D	NY-30	March 4, 1863	1st term
106	James A. Garfield	R	OH-19	March 4, 1863	1st term
107	John A. Griswold	D	NY-15	March 4, 1863	1st term
108	Ephraim R. Eckley	R	OH-17	March 4, 1863	1st term
109	Benjamin Gwinn Harris	D	MD-05	March 4, 1863	1st term
110	Charles M. Harris	D	IL-04	March 4, 1863	1st term
111	Henry W. Harrington	D	IN-03	March 4, 1863	1st term
112	Anson Herrick	D	NY-09	March 4, 1863	1st term
113	William Higby	R	CA	March 4, 1863	1st term
114	Giles W. Hotchkiss	R	NY-26	March 4, 1863	1st term
115	Asahel W. Hubbard	R	IA-06	March 4, 1863	1st term
116	John H. Hubbard	R	CT-04	March 4, 1863	1st term
117	Calvin T. Hulburd	R	NY-17	March 4, 1863	1st term
118	Wells A. Hutchins	D	OH-11	March 4, 1863	1st term
119	Thomas Jenckes	R	RI-01	March 4, 1863	1st term
120	William Johnston	D	OH-08	March 4, 1863	1st term
121	John A. Kasson	R	IA-05	March 4, 1863	1st term
122	Martin Kalbfleisch	D	NY-02	March 4, 1863	1st term
123	Orlando Kellogg	R	NY-16	March 4, 1863 Previous service: 1847–1849	2nd term*
124	Francis Kernan	D	NY-21	March 4, 1863	1st term
125	Austin A. King	U	MO-06	March 4, 1863	1st term
126	Francis Celeste Le Blond	D	OH-05	March 4, 1863	1st term
127	DeWitt Clinton Littlejohn	R	NY-22	March 4, 1863	1st term
128	Benjamin F. Loan	U	MO-07	March 4, 1863	1st term
129	Alexander Long	D	OH-02	March 4, 1863	1st term
130	John W. Longyear	R	MI-03	March 4, 1863	1st term
131	Daniel Marcy	D	NH-01	March 4, 1863	1st term
132	James M. Marvin	R	NY-18	March 4, 1863	1st term
133	Archibald McAllister	D	PA-17	March 4, 1863	1st term
134	John R. McBride	R	OR	March 4, 1863	1st term
135	Joseph W. McClurg	U	MO-05	March 4, 1863	1st term
136	James F. McDowell	D	IN-11	March 4, 1863	1st term
137	John F. McKinney	D	OH-04	March 4, 1863	1st term
138	George Middleton	D	NJ-02	March 4, 1863	1st term
139	William H. Miller	D	PA-14	March 4, 1863	1st term
140	Samuel F. Miller	R	NY-19	March 4, 1863	1st term
141	Daniel Morris	R	NY-25	March 4, 1863	1st term
142	William R. Morrison	D	IL-12	March 4, 1863	1st term
143	Amos Myers	R	PA-20	March 4, 1863	1st term
144	Leonard Myers	R	PA-03	March 4, 1863	1st term
145	Homer A. Nelson	D	NY-12	March 4, 1863	1st term
146	Jesse O. Norton	R	IL-06	March 4, 1863 Previous service: 1853–1857	3rd term*
147	Charles O'Neill	R	PA-02	March 4, 1863	1st term
148	John O'Neill	D	OH-13	March 4, 1863	1st term
149	Godlove Stein Orth	R	IN-08	March 4, 1863	1st term
150	James W. Patterson	R	NH-03	March 4, 1863	1st term
151	Sidney Perham	R	ME-02	March 4, 1863	1st term
152	Hiram Price	R	IA-02	March 4, 1863	1st term
153	William Radford	D	NY-10	March 4, 1863	1st term
154	Samuel J. Randall	D	PA-01	March 4, 1863	1st term
155	William H. Randall	UU	KY-08	March 4, 1863	1st term
156	Andrew J. Rogers	D	NJ-04	March 4, 1863	1st term
157	Lewis Winans Ross	D	IL-09	March 4, 1863	1st term
158	Robert C. Schenck	R	OH-03	March 4, 1863 Previous service: 1843–1851	5th term*
159	Glenni W. Scofield	R	PA-19	March 4, 1863	1st term
160	Thomas B. Shannon	R	CA	March 4, 1863	1st term
161	Ithamar Sloan	R	WI-02	March 4, 1863	1st term
162	Green C. Smith	UU	KY-06	March 4, 1863	1st term
163	Rufus P. Spalding	R	OH-18	March 4, 1863	1st term
164	John F. Starr	R	NJ-01	March 4, 1863	1st term
165	Henry G. Stebbins	D	NY-01	March 4, 1863	1st term	Resigned on October 24, 1864.
166	Myer Strouse	D	PA-10	March 4, 1863	1st term
167	John T. Stuart	D	IL-08	March 4, 1863 Previous service: 1839–1843	3rd term*
168	Lorenzo De Medici Sweat	D	ME-01	March 4, 1863	1st term
169	William Temple	D	DE	March 4, 1863	1st term	Died on May 28, 1863.
170	Martin R. Thayer	R	PA-05	March 4, 1863	1st term
171	Henry W. Tracy	R	PA-13	March 4, 1863	1st term
172	Charles Upson	R	MI-02	March 4, 1863	1st term
173	William B. Washburn	R	MA-09	March 4, 1863	1st term
174	Ezra Wheeler	D	WI-05	March 4, 1863	1st term
175	Joseph W. White	D	OH-16	March 4, 1863	1st term
176	Abel C. Wilder	R	KS	March 4, 1863	1st term
177	Thomas Williams	R	PA-23	March 4, 1863	1st term
178	Charles H. Winfield	D	NY-11	March 4, 1863	1st term
179	Fernando Wood	D	NY-05	March 4, 1863 Previous service: 1841–1843	2nd term*
180	Frederick E. Woodbridge	R	VT-01	March 4, 1863	1st term
—	William G. Brown, Sr.	U	WV-02	December 7, 1863 Previous service: 1845–1849 and 1861–1863	4th term**
—	John V. L. Pruyn	D	NY-14	December 7, 1863	1st term
—	John G. Scott	D	MO-03	December 7, 1863	1st term
—	Nathaniel B. Smithers	U	DE	December 7, 1863	1st term
—	Kellian Whaley	U	WV-03	December 7, 1863 Previous service: 1861–1863	2nd term*
—	Jacob B. Blair	U	WV-01	December 17, 1863 Previous service: 1861–1863	2nd term*
—	Ebon C. Ingersoll	R	IL-05	May 20, 1864	1st term
—	Samuel Knox	U	MO-01	June 10, 1864	1st term
—	Henry G. Worthington	R	NV	October 31, 1864	1st term
—	Dwight Townsend	D	NY-01	December 5, 1864	1st term

Delegates

Rank	Delegate	Party	District	Seniority date (Previous service, if any)	No.# of term(s)
1	Samuel Gordon Daily	R	NE	May 18, 1860	03rd term
2	Hiram Pitt Bennet	R	CO	August 19, 1861	02nd term
3	George Edward Cole	D	WA	March 4, 1863	01st term
4	William Jayne		DAK	March 4, 1863	01st term
5	John F. Kinney	D	UT	March 4, 1863	01st term
6	Gordon Newell Mott	R	NV	March 4, 1863	01st term
7	Francisco Perea	R	NM	March 4, 1863	01st term
	William H. Wallace	R	ID	February 1, 1864 Previous service, 1861–1863.	02nd term*
	John Blair Smith Todd	D	DAK	June 17, 1864 Previous service, 1861–1863.	02nd term*
	Charles Debrille Poston	R	AZ	December 5, 1864	01st term
	Samuel McLean	D	MT	January 6, 1865	01st term