Alex Rodriguez has hit the most career home runs by a player 26 or younger, with 273 homers.

Interpreted as:

most career hr by a player, age 26 or younger

	NAME	HR	G	AB	R	H	2B	3B	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Alex Rodriguez A. Rodriguez	273	1,054	4,148	838	1,285	247	16	813	443	53	823	157	42	4,703	2,383	536	16	43	20	89	.310	.380	.574	.954
2	Jimmie Foxx J. Foxx	266	1,109	3,862	857	1,307	224	72	961	668	7	545	42		4,592	2,473	562	55				.338	.437	.640	1.077
3	Eddie Mathews E. Mathews	253	1,029	3,752	703	1,039	165	34	663	645	9	609	34	16	4,456	2,031	452	23	27	47	50	.277	.382	.541	.923
4	Albert Pujols A. Pujols	250	933	3,489	748	1,159	260	12	758	493	48	394	36	17	4,062	2,193	522	1	31	98	114	.332	.419	.629	1.047
5	Mickey Mantle M. Mantle	249	1,102	3,937	889	1,238	185	50	766	797	7	778	76	24	4,768	2,270	484	11	16	48	37	.314	.429	.577	1.006
6	Mel Ott M. Ott	242	1,288	4,542	912	1,440	257	47	963	707	24	359	45		5,332	2,517	546	59				.317	.412	.554	.966
7	Ken Griffey Jr. K. Griffey Jr.	238	1,057	3,985	695	1,204	227	21	725	504	25	634	108	44	4,558	2,187	486	6	38	119	75	.302	.381	.549	.930
8	Frank Robinson F. Robinson	235	1,023	3,794	733	1,166	221	35	692	450	75	540	96	29	4,370	2,162	491	13	38	67	102	.307	.388	.570	.958
9	Juan Soto J. Soto	231	1,056	3,709	742	1,042	195	15	662	862	18	799	76	24	4,616	1,960	441	3	24	78	99	.281	.417	.528	.945
10	Mike Trout M. Trout	231	1,034	3,771	774	1,155	221	43	629	670	62	971	186	34	4,546	2,155	495	0	43	81	52	.306	.415	.571	.987
11	Andruw Jones A. Jones	224	1,152	4,170	687	1,118	219	25	684	440	44	879	118	43	4,696	2,059	468	6	36	31	94	.268	.342	.494	.835
12	Orlando Cepeda O. Cepeda	221	1,049	4,046	642	1,254	223	22	743	245	48	607	92	47	4,377	2,184	466	1	37	61	110	.310	.354	.540	.893
13	Bryce Harper B. Harper	219	1,084	3,879	708	1,071	219	19	635	684	29	1,012	90	34	4,639	1,985	457	9	38	81	76	.276	.385	.512	.897
14	Hank Aaron H. Aaron	219	1,039	4,114	715	1,309	225	57	743	341	15	377	36	16	4,530	2,305	501	18	42	72	116	.318	.369	.560	.929
15	Juan Gonzalez J. Gonzalez	214	817	3,130	480	887	172	13	659	214	35	609	16	11	3,406	1,727	399	2	25	40	87	.283	.334	.552	.885
16	Johnny Bench J. Bench	212	1,094	4,065	612	1,096	197	17	745	451	11	643	29	26	4,587	1,963	426	5	55	83	111	.270	.340	.483	.823
17	Miguel Cabrera M. Cabrera	211	1,051	3,963	637	1,235	255	12	764	454	33	829	24	15	4,491	2,147	478	5	36	90	127	.312	.384	.542	.926
18	Giancarlo Stanton G. Stanton	208	827	2,980	453	792	170	10	540	402	29	977	34	12	3,427	1,606	388	0	16	61	60	.266	.357	.539	.896
19	Prince Fielder P. Fielder	199	870	3,085	496	862	173	9	563	472	72	691	15	9	3,662	1,650	381	0	33	86	66	.279	.384	.535	.919
20	Adam Dunn A. Dunn	198	821	2,832	519	695	151	6	466	574	46	927	48	16	3,466	1,452	355	2	12	60	38	.245	.380	.513	.892
21	Joe DiMaggio J. DiMaggio	198	825	3,368	735	1,163	214	69	815	337	22	160	21		3,738	2,109	481	11			33	.345	.408	.626	1.035
22	Manny Machado M. Machado	195	1,011	4,043	573	1,138	225	12	571	331	18	744	55	25	4,438	1,972	432	14	32	36	119	.281	.336	.488	.824
23	Harmon Killebrew H. Killebrew	195	750	2,524	422	654	97	11	500	427	19	609	6	8	2,990	1,358	303	0	20	16	58	.259	.368	.538	.906
24	Willie Mays W. Mays	188	782	2,979	545	933	133	66	517	371	12	327	122	43	3,387	1,762	387	1	24	50	70	.313	.389	.591	.980
25	Darryl Strawberry D. Strawberry	186	823	2,885	501	768	143	28	548	449	21	745	165	63	3,387	1,525	357	1	31	80	36	.266	.366	.529	.894